From what I understand, if you have a desire to stop drinking you have every right to take a seat in that room. Even if you keep relapsing. Don't give people in there power over you. I have no idea the details of your situation, but if this sponsor is sharing your confidential information with others, be glad she is no longer your sponsor. She is wrong for doing that. I don't care what justifications anyone has, she is wrong for sharing your information with others. Ethically, morally etc. If the group you're in has the pervasive attitude toward your relapsing as you've indicated, I'd suggest finding another group if possible. If you have a desire for sobriety, you belong in AA.