Lydia Hartley

Overview

Lydia Hartley is the younger of the two Hartley sisters, daughter of English businessman Josiah Hartley and his ambitious wife Agnes Hartley. The Hartley family have been fellow English residents at Palais_Kinsky since the party’s arrival in Vienna on 3 August 1814 — Lydia first appears in canon at the Palais Kinsky bar that same evening, “wide-eyed and excited” at her first time out of England. She is described as flirtatious, vain, competitive, and lacking her elder sister’s restraint.

Lydia practises pianoforte every afternoon — a detail that matters more than her parents realise. In a Vienna where Professor Herzfeld is harvesting young female musicians for the Brotherhood, an English ingénue who plays the pianoforte daily and whose mother is actively trying to introduce her to Herzfeld is exactly the kind of person who disappears.

Lydia has openly pursued Adrien_de_Montferrand from their first meeting in the Palais Kinsky bar, picking up every conversational gambit, making googly eyes at the opera in Session 2, accepting his arm to the bar at intermission, and continuing the pursuit at the Palais Kinsky breakfast table in Session 5. Adrien has consistently treated her like a little sister, to her ongoing disappointment. At the Grand Masquerade in Session 8 she was publicly slighted when Adrien stepped past her to ask Caroline first — in front of half the room. Whatever face she kept in the moment, the slight cost her real social standing in front of witnesses, and she is unlikely to forget it.

Physical Description

Pretty, polished, and a touch over-decorated for her age. At the masquerade she wore a gold mask with feathers over a gown cut visibly lower than her sister’s — a deliberate contrast. She moves with the slightly-too-fast confidence of a young woman who has been told her whole life that she is the prettier one and is starting to suspect that prettiness is not enough.

Personality

Lydia is not malicious. She is young, vain, competitive with her older sister, and in over her head in a foreign city among adults whose actual stakes she does not understand. She mistakes Adrien’s polite distance for the kind of fashionable indifference that European gentlemen affect before declaring themselves, and she has not yet realised that he genuinely sees her as a child. The masquerade snub — in front of witnesses, in front of her sister, in front of her mother — is the first time the truth has been shoved in her face. She will react somewhere on the spectrum between sulking, weeping, scheming, or all three.

Portrayal Note: Speaks too quickly when nervous. Laughs at things that aren’t funny. Drops Adrien’s name into conversations he isn’t part of. Stops mid-sentence when he enters a room.

Canon Timeline

• Session 1 — Vienna (Palais Kinsky bar, evening of 3 August 1814): First appearance. Wide-eyed and excited; her first time out of England. Introduced to the party by her mother Mrs Agnes Hartley alongside her father and sister. Particular interest shown toward Adrien when his title was announced.
• Session 2 (Burgtheater, 4 August 1814): Made open eyes at Adrien throughout Don Giovanni. Allowed him to escort her to the bar at intermission, where she was treated like a little sister to her disappointment.
• Session 5 (Palais Kinsky, breakfast): Continued forward pursuit at the breakfast buffet. Mother Agnes began to redirect her energies toward Caroline.
• Session 8 (Palais Lobkowitz, Grand Masquerade, 8 August 1814): Adrien stepped past her to ask Caroline to dance first. Public slight, witnessed by guests. Romance arc with Adrien definitively closed; sibling rivalry with Caroline definitively opened.

Knowledge

Lydia knows nothing of the Brotherhood, the Engine, or any supernatural element. What she knows in canon is purely social:

• The English contingent at Palais Kinsky and their daily movements
• That her mother is trying to introduce her and her sister to Professor Herzfeld — Lydia is enthusiastic about the idea, since she imagines herself a budding pianist who would enjoy his attention. She has no idea what Herzfeld is.
• Her own slighted standing after the masquerade

The Brotherhood Risk Profile

Lydia is the most exposed Hartley to the Brotherhood’s actual threat surface, and she does not know it. The criteria Herzfeld targets are:

1. Young female musician ✓ (pianoforte daily)
2. Foreign and away from home support networks ✓ (English visitor, no Vienna family)
3. Eager for patronage and attention ✓ (vain, ambitious mother)
4. Mother actively seeking introduction to Herzfeld ✓ (Session 1 canon)
5. Lacks the perceptiveness to recognise predatory recruitment ✓ (would mistake it for flattery)

If the Hartley family ever crosses the Brotherhood’s social radius — which Mrs Hartley is actively trying to make happen — Lydia is the daughter who will be cultivated.

Complications

Lydia is the kind of NPC who creates social problems rather than tactical ones. She might:

• Spread rumours about the party (especially Adrien) within the English community at Palais Kinsky
• Speak to her father about Adrien’s “behaviour,” which would push Mr. Hartley toward retaliatory gossip
• Throw herself at another, less suitable suitor in a deliberate attempt to provoke Adrien — and walk straight into a Brotherhood-adjacent connection without realising what she’s doing
• Try to befriend another PC (Emma? Georgiana?) for triangulation purposes

Final Notes

Lydia is a romantic complication and a low-grade social problem, not a threat. Her real value at the table is as a pressure point on Adrien’s relationship with Caroline — the cost of choosing one sister is permanently souring the other.

[!info] Keeper Only Lydia is most useful when she is making things slightly worse without intending to. Resist the urge to make her a villain — her vanity and her hurt are enough. If she ever needs to be in genuine danger, the cleanest hook is to have her wander into the Brotherhood’s social radius via her father’s Herzfeld pursuit while trying to make Adrien jealous.

Session Appearances

• Session 1 (Vienna): First appearance, Palais Kinsky bar, evening of 3 August 1814. Wide-eyed, excited, first time out of England.
• Session 2: Burgtheater opera (forward eyes during Don Giovanni; intermission with Adrien at the bar).
• Session 5: Palais Kinsky breakfast — continued pursuit of Adrien.
• Session 8: Grand Masquerade at Palais Lobkowitz. Publicly snubbed in favour of Caroline.

Relationships

• Daughter of Josiah Hartley|Mr Josiah Hartley — Father; English businessman
• Daughter of Agnes Hartley|Mrs Agnes Hartley — Mother; originally pushed Lydia toward Adrien before pivoting to Caroline by Session 5; actively trying to introduce both daughters to Professor Herzfeld
• Sister of Caroline Hartley — Elder sister; competitive sibling rivalry, sharply worsened by the masquerade snub
• Pursues Adrien de Montferrand — Has pursued Adrien openly since first meeting at the Palais Kinsky bar (Session 1); was publicly snubbed at the Grand Masquerade in favour of Caroline