I think I picked this up for the roller derby content. Our protagonist's derby name is Rolldemort. I don't remember her real name without looking it up, but I do remember her best friend's: Sibby. Sibby is her derby wife. They're seniors in a Cambridge high school. Sibby, an Aussie transplant is waitlisted at Tufts, and Rolldemort got into Amherst ED. Speaking of transplants, it turns out a liver condition Rolldemort was born with, but didn't pay much attention to is all of a sudden demanding attention. Other important characters are R's parents, her brother Alex, and Alex's best friend Will. There's a little romance, but as with most of my favorite YA, it's really a story of friendship.