Susannah's Garden by Debbie Macomber

When she was eighteen, Susannah Nelson was sent abroad to school. In what she saw as her fathers attempt in dictating her life it effectively separated her from her boyfriend Jake, and she never got to see her brother Doug again who was killed that summer in an automobile accident. After a few short letters, Susanna never heard from or saw Jake and though it hurt at the time, she later met, married a fine man, and raised a family. -----

Now her children are just about grown, she's hitting midlife, and Susannah's marriage seemed stale as her thoughts continually seemed to focus on what `could have been' if her father hadn't interfered in her life and romance with Jake. With her father recently passed on, she had been summoned home sooner than she'd planned when alerted by neighbors and friends that her widowed mother was having difficulties dealing with her loss and living alone. Back in the house and town she'd grown up in Susanna would have to deal with her mother's increasing aging problems, and make some tough decisions regarding her care. Additionally, she would she face the past, discovering new insights into her troubled relationship with her dad, and dealing with a similar issue concerning her rebellious nineteen year old daughter. 

A lovely, heartwarming read.  I like the ending.  She discovered/decided that the life she had was way better than if her life had gone in any other direction and she and her husband reconnected.