If I Forget, You Remember - Tapa dura

Elyse Donaldson's perfectly planned summer is interrupted by her grandmother's tragic battle against Alzheimer's, and while she struggles with the changes that befall her grandmother, she experiences other stressful family changes.

is over and Elyse Donaldson is ready for a perfect summer. She's going to read her favorite books and write her first novel. She's even determined to get along with her older sister, Jordyn. But her plans quickly unravel.
Granny's Alzheimer's is getting worse. So she moves in with Elyse, Jordyn, and their mom, and the girls watch over her while their mother is at work. Sometimes she's fine, but sometimes she slides into the past and doesn't even recognize Elyse. It's frightening to realize that her beloved grandmother is slowly slipping away. Then Elyse gets involved in a neighborhood newspaper, and her mom starts dating for the first time since her father died. Elyse doesn't think she can stand any more changes, any more loss, but she's a lot stronger than she knows. This is the summer she'll learn to stand up for herself and to help the grandmother who has always helped her.