On the Rocks is a contemporary f/f romance, the second in Beers' Swizzle Stick Romance series. I bought my copy new.
Review:
Second grade teacher Vanessa Martini isn't wild about having to call the parents of one of her students. She's a teacher because she likes kids - if she never had to deal with their parents, she'd be fine with that. But something is going on with little Oliver Chapman, and he's been acting out in class a lot lately.
Grace Chapman is exhausted and feels like she isn't measuring up in any area of her life lately. The owner of the flower shop she works for is difficult, to put it mildly, and her personal life isn't going any better - she and her husband are divorcing, and she's tired of her mother constantly acting like the failure of her marriage is all her own fault. Then there's her son, Oliver, who's taking the divorce badly. She knows he loves her, but that doesn't stop it from hurting when he says something angry and hurtful or acts like he'd prefer to be with his father.
Vanessa, Oliver's teacher, feels like yet another source of judgement in Grace's life. As the two of them keep crossing paths, however, they gradually thaw towards each other...and realize that there's a mutual attraction brewing between them.