The Almost Sisters by Joshilyn Jackson
Leah Birch Briggs is a single 38-year-old graphic novelist who loves superheroes. When a crisis with her grandmother forces her to rush home to her traditional Southern family, she doesn't know how to tell them that she's pregnant. And that she doesn't know the guy's name. And that he's black. But there's no time for that as her grandmother's condition is worse than she's been led to believe, her stepsister's marriage is unraveling, and a discovery is made in her grandmother's house that will change everything. Prepare to fall hard for The Almost Sisters.