Easy, fast-paced read. I really did like the heroine, Millie, who has BPD and is a double amputee besides. I liked her gumption and her level of self-awareness. I can't comment on the presentation of her mental illness as I really know nothing about her particular diagnosis, but it came across as well-researched and thoughtful and I had a great deal of empathy for her.

But fairies just aren't my jam. I keep trying, on and off, but I'm never particularly excited to read about them and Borderline didn't do anything to change that. Not the author's fault, she's just facing an uphill battle with me as audience here. Readers who are into the whole fairy court thing will probably rate this higher.