[adpiucf]

Also, you're worried about her joining a sorority b/c you are the one who monitors her disease?

That's a lame excuse for objecting to her joining. The truth is that you're afraid she's going to go off and cheat on you and hook up with other guys. Trust her not to. She's old enough to control and check her blood sugar. And if she cheats on you, then she's an immature skank and you deserve someone better.

Chill out. You don't have to monitor her blood sugar, dress her for recruitment or drive her spoiled ass around town. She sounds like a perfect nightmare. She has you by the balls. Grow some new ones and either walk away or get involved with an activity so you're not hanging around the house crying in your Cheerios because she is at a chapter meeting.