Congratulations on your accomplishment, and if you have more barriers to overcome than the next person, you deserve even MORE congratulations.

I've also given up on my family's approval. There's always going to be something they criticize. If I were to become a doctor, they'd wonder why I wasn't a surgeon, and if I became a surgeon, they'd wonder why I haven't won the Nobel prize yet.

I'm not saying it's right, or that you should do it, but if I were you I might say to my mother, "I can understand why you're so excited about brother's graduation. After all, he's the only one in the family doing it." Yes, I can be very sarcastic, and that's why I don't recommend doing what I would do.