Isobel and Peter’s Sibling Devotion
When You Were MineThis thread traces the siblings’ deep attachment through separation, false bereavement, reunion, and their renewed commitment to protect one another.
increasing
Bearing strength in each event
decreasing
A Shared Childhood

A Shared Childhood
Companions at home
Isobel Davenport and Peter Davenport grow up close, sharing the energetic companionship of childhood at Willowbrook Hall. Peter’s presence becomes a source of safety and affection, and memories of their familiar home later help Isobel endure the loss of everything she knows.
Family held together
After their parents’ deaths, the siblings remain each other’s closest family connection. Peter’s concern for Isobel is practical as well as loving: before leaving on the Norfolk mission, he leaves her money, a small act of care that becomes essential during her escape.
A bond under pressure
Their closeness makes separation dangerous for both. Peter’s absence allows Rupert Davenport to exploit Isobel’s isolation, while the false report of Peter’s death strips her of the hope that her brother might return to protect her.
A Brother Believed Dead

A Brother Believed Dead
A lie weaponized
While Isobel is under Rupert Davenport’s control, he tells her that Peter Davenport has been killed during the mission. The report reaches her when she is already grieving and disoriented, and she has no safe way to confirm whether it is true.
Isolation made absolute
Believing her brother dead leaves Isobel feeling that the family protection she once counted on has vanished. Rupert uses that belief to strengthen his authority over her, while Isobel’s inability to contact Peter prevents their affection from becoming practical help.
The cruelty of reunion delayed
Peter is alive and eventually searches for Isobel, but she cannot know that while imprisoned. The invented loss makes her later escape more desperate and ensures that the siblings’ eventual reunion carries both joy and the pain of time stolen from them.
Peter’s Money in the Flight

Peter’s Money in the Flight
A gift remembered
As Isobel Davenport prepares to flee, she remembers the pouch of coins Peter Davenport left her. That money offers more than immediate means: it is a tangible reminder that her brother once anticipated her needs and trusted her to act for herself.
Help carried forward
Kitty supplies her own savings as well, and Isobel sets out with both women’s help. Peter cannot accompany her, but the provision he made becomes part of the support system that keeps her moving away from Rupert Davenport’s control.
Affection across distance
The money connects the siblings during the months when they are separated and each fears the other lost. Isobel’s intention to repay Kitty and her continued reliance on Peter’s gift show how love in this family is expressed through concrete acts of protection.
The Living Brother Returns

The Living Brother Returns
An unexpected arrival
Peter reaches Havistock Hall after learning that Isobel has been found alive and dangerously ill. He pushes past the household’s evasions to reach her, revealing how urgent his need is to see with his own eyes that she has survived.
Relief breaks through formality
He finds Isobel in Dominic Cavendish’s bed and initially plays the stern older brother, but his apparent outrage gives way to relief and delight. Isobel’s shock at seeing him alive becomes laughter and renewed affection as she realizes Rupert’s claim of Peter’s death was another lie.
Family restored
Peter’s presence returns a vital part of Isobel’s lost family to her life. His reunion with her also strengthens her place in a larger circle of protection, since he and Dominic can now care for her together rather than search for her separately.
A Mutual Promise of Happiness

A Mutual Promise of Happiness
Honesty after suffering
As Isobel recounts what happened at Gosport Hall, Peter listens alongside Dominic and helps her face memories she has long carried alone. Their willingness to hear her strengthens the trust between them, although she sometimes needs to choose when she is ready to speak.
Support beyond protection
When Peter confides that he once loved Jemima and has never recovered from losing her, Isobel responds without the class prejudice he fears. She promises to help find Jemima, recognizing that Peter’s happiness matters as much as her own security.
Siblinghood renewed
Isobel’s offer reverses the old pattern in which Peter protects his younger sister: she now becomes his ally in pursuing a future he believes may be lost. Their bond rests not on duty alone but on reciprocal care and the desire for each other to live freely and happily.
Isobel and Peter’s childhood at Willowbrook Hall
After Peter departs on the Norfolk mission
The night Isobel escapes Gosport Hall
At Havistock Hall after Isobel begins recovering
During the weeks before the final confrontation