Help with my character (Please answer ASAP)?

If she's obsessed with biology, why not make her a biologist? She could be a teacher (not very high-paying, but still), or a scientist, or something. A MAD scientist (since, frankly, she sounds a little insane!). If she likes to write stories, and she likes biology, maybe she could end up being a sort of Victor Frankenstein, and create a living creature? And she can make the creature her slave and send it grocery shopping for her. Haha. Or she could be a witch, or something, and cast spells on everyone she doesn't like and everyone who calls her fat. I don't know. Good luck. :)