All that I leave behind - Alison Walsh

It hadn't been Rosie's idea - a 'quaint' wedding at her childhood home in the Irish countryside. Nevertheless she finds herself back in Monasterard after a decade away, with her American fianc on her arm and a smile fixed to her face.
As expected, the welcome from her siblings isn't exactly warm. Mary-Pat, the one who practically raised Rosie, is avoiding her. June is preoccupied with maintaining the illusion of her perfect family. And Pius, who still counts the years since their mother left, is hiding from the world. Each of them is struggling with the weight of things unsaid.
In the end, it's their father who, on the day of Rosie's wedding, exposes what has remained hidden for so long. And as the O'Connor siblings piece together the secrets at the heart of their family, they begin to forgive the woman who abandoned them all those years ago.