Sorry to hear about your grandfather. It sounds as though you come from a wonderful family.
Stay in school. I was a HS teacher/football coach for 15 years-when people take time off, they have trouble going back.In fact, they usually don't go back. Play lax, become a part of that. Cross off some gen eds, get acclimated. The support and connections you will get through being on that team will help get you through.