Hello devildog,
I am a male bodied DID like you. There doesnt seem to be many of us on this site. maybe that is where the trouble is coming from with all the assumptions. Not sure but that is my guess. anyways, i hope i can help steer the conversation away from arguments.
Like I said i am male like you, I also have problems with alters being potty trained. as the host it is hard for me to understand what is going on internally, but the problem lies with kid alters( some are female). I have a really hard time controlling when kid alters come out or not so it is hard for me to just be able to not switch into those alters. For me it is easier said than done, to just be co conscious or have addult alters take control and handle the situation.
One of my older female alters (brittany) helps out as much as she can with the kid alters, but she isnt always there and she isnt co conscious with a lot of them. Over time it has gotten better.
I agree with Violarules that explaining to Elisabeth that the body is male in a gentle manner while teaching her potty training would work well.
I really wish I knew how to deal with it better and could answer your questions, but im pretty clueless. but I definitely experience what you are experiencing.