Summer Rose by Katie Winters

Newly widowed Rebecca reunites with the father who once abandoned her. As summer unfolds, she finds herself back in the dreamy world of Nantucket Island — facing a past she thought she’d outrun years ago.
Rebecca is the estimable chef of Bar Harbor Brasserie, which she owns with the love of her life, Fred. One night, as the governor of Maine dines at one of their tables, a heinous snowstorm pushes Fred’s car off the road— and Rebecca suddenly finds herself a widowed mother of three.
As Rebecca reels from the death of her husband, a ghost from her past emerges to remind her of all she lost so many years ago. Her father, Victor Sutton, is a family therapist who has helped numerous struggling families get through dark times.
Rebecca isn’t keen to forgive him though, and Victor doesn’t ask for it. He does explain, however, that Rebecca’s mother, Esme, recently lost her second husband to a heart attack. She’s alone in Nantucket and she needs help.
Lost in the wake of her husband’s death and the sale of her restaurant, Rebecca follows her father back to Nantucket to check on Esme. The only problem is she is nowhere to be found.

Soon after their arrival, Rebecca and her father learn that The Sutton Book Club is struggling financially, and the mystery of her mother seems to grow more ominous by the day. On top of that, Rebecca is not sure how to face her past, nor how to ask her sisters to come home and help.