[hocus pocus]

Like I've said before, it is wonderful that you're trying to support your girlfriend. Not a lot of people would know how to be supportive in this situation. I know that supporting someone struggling like this (especially when you're struggling similarly) can be draining on you, and you need to take care of yourself before you can help others. You should make sure that your own needs are fulfilled so you can be the best you can be while helping others. You cannot be your girlfriend's only lifeline. She needs other means of support as well, if she doesn't already such as a therapist, counselor, or one of her parents. Perhaps you can encourage her to utilize the links that we have provided to you in this thread.

As for your brother, it would probably be in good interest to tell your parents about what he's going through so he can get the help that he needs.