Around here, you can always just say "I'm glad to be here and I pass". I know AA is working on a pamphlet about mental illness and recovery - maybe that will help other people understand a little better. I hope!!
You say you're multiple? Would it be helpful if it was one of your alter's "job" to go to meetings, then let the others know what was learned? DH had that when he was really separate - Jonathan would handle going to meetings to take the load off of "everyone", and he could check out the folks there to find a couple who were "safe". Do you have anyone in your system who could do that for you?