Hello Stella, and welcome.
I'm so sorry for what you're experiencing. Sexual harassment is always disturbing, but feels even more insidious in a support group environment.
Ultimately, sexual abuse is about power and clearly your abusers have learned the gaslighting game well. They are relishing the emotional turmoil they create and perceive your action as an open invitation. In other words – welcome to the ugly world of “13th Stepping.” (13th stepping is an AA term for when older members take sexual advantage of newcomers – and according the Journal of Addiction Nursing, happens to half of the women who take part in recovery programs.)
Stories of abuse are rampant in AA, and unfortunately, the organization has yet to address a formal sexual harassment policy.
While it’s extremely rare to experience this sort of predation by other women, it can and does exist.
You (like so many women) have probably learned to internalize sexual harassment by avoiding or downplaying the gravity of the situation because, deep down, you suspect it's your fault.
Social conditioning has trained you to believe that your body is not your own, but rather, public property to be guarded (by your Jealous husband) shamed (by your Mother) and ruthlessly judged (by society.)
This is the very definition of rape culture, further underscored by the victim-blaming behavior of the other female participants in your group who should be your allies.
I don’t have to tell you that the shape of a woman’s body or her dress does not condone harassment. I don’t have to tell you that your fear to take a stand does not equate “guilt.” But I do need to tell you that you don’t have to continue to needlessly suffer through this toxic arrangement.
Your abusers have taken a page from a Mad Men-era harassment playbook and assume their status as older, “non-threatening” women entitles them to do so. It doesn’t. The culture of AA may encourage you not to make waves - but if you feel unsafe then it's time for you to stand up and challenge the status quo.
You are not powerless.
If your group facilitator refuses to intervene and exercise the appropriate authority to police the actions of its members – you’ll need to make it clear (to them and the rest of your group) that this behavior is inappropriate – and furthermore - illegal.
If it continues, call the police, file reports, keep good records and UNDERSTAND YOUR RIGHTS. You're not just protecting yourself, but future AA group members.