I've been dating Lavender Brown, but I don't know how to break up with her now? Because I was dating her, I've lost 50 points with Astoria. Will breaking up with her get those points back? Otherwise is there another way?
No, you can't get these points back. You can pnly load earlier save. Try to talk with other character about how to break with Lavender.
I've talked to each student but cant find which one i need to, too break up with Lavender
Talk to the librarian. you'll start a convo with her about hate potions.