I don't see that you have a problem, you just need to set a priority.
It seems these women are driving you nuts and you're allowing it in exchange for a bit of applique knowledge (which you could probably get on You Tube) or an Applique Board similar to this one.
Either contact your hostess prior to the next meeting and, truthfully, explain why you won't be returning to the meetings; or
Bite the bullet and continue put up with their nonsense and risk developing an ulcer.
Keep in mind our crafts are suppose to give us pleasure; opportunities to exchange experiences and knowledge; and chances to develop new friendships. I don't see you getting much of this from this group.
Your choice, good luck and I hope you find a more pleasant environment to practice your craft.
Don't let these people "steal your joy"