Forget Me Not by Stacey Willingham
Claire Campbell's life is a mess. After getting passed over for a promotion at the newspaper where she's a reporter, she quit. But the freelance work she was counting on never materialized. She's really stressing about her future when she gets a call from her father saying her mother fell and needs some help, so Claire should go home--a place she hasn't been in 15 years. When she gets home, she can't stop thinking about her older sister, Natalie, who one day when she was a teen, vanished into thin air and was never seen again. She eventually ends up going to visit the vineyard where Natalie worked the last summer of her life and they ask if she would like a job picking grapes. But once she starts, Claire realizes there are some strange goings-on at Galloway Farms. And when she finds the diary of another girl who once lived there, she is determined to find out what happened to Natalie and some of the other women who had lived at the farm. It's kind of a creepy ...