Moving by Jenny Eclair
It only took one night to tear a family apart. Artist and illustrator Edwina Spinner used to have a busy family life. Now she lives alone, in a house that has grown too big for her. She has decided to sell it. As Edwina takes the estate agent from room to room, she finds herself transported back to her life as a young mother. Back to her twins, Rowena and Charlie, and a stepson she cannot bring herself to mention by name.
As the house reveals its secrets, Edwina is forced to confront her family's past, and a devastating betrayal that changed everything. But Edwina doesn't know the whole story. And to discover the truth, she will have to face the one person she vowed never to see again.
Good secondhand condition, paperback.