They're Just Little Girls

(I made a reference to The 100 with the title. I am t r a s h.)
Brought up by a single mother, Mal never knew her father, and gets curious when she soon learns she can control fire, which makes her take even more major precautions. One day she was sent off to a camp, not even knowing why.
Parents were always a touchy subject with Molly. Her father and stepmother constantly ignore her, despite her impeccable skills in getting all A's in school, easily passing her classes. One minute she's wishing to get away from home, the next she's whisked off to a wacko camp.
Ripley always loved having a bunch of siblings, but never thought she had so much when she came to Camp Half-Blood. She imeadiently tries her best to impress them all.
Jo grew up learning to survive and control magic since she was little. She was taken to Camp-Half Blood, where she practically grew up at, but decides to leave because of personal reasons she won't disclose.
April arrived at the camp one day, and clung on to Jo since she seemed so shy. She fears their friendship will be torn apart.
These girls all join together to help each other, despite all their differences.
(Percy Jackson/The Kane Chronicles crossover with Lumberjanes, Gotham Academy, and Shadowhunters)