Hi Terry @terrydclaar, I'm sorry to hear your wife has been diagnosed with Mucous Membrane Pemphigoid. I don't have any personal experience with the condition but can share a few sites that may be helpful to learn more about it.

Here is a previous post above that has links that may be helpful - https://connect.mayoclinic.org/discussion/mucous-membrane-pemphigoid-2e577d/?pg=1#comment-263466

Here is a link that was on the NORD site that has some info that could be newer - International Pemphigus & Pemphigoid Foundation: https://www.pemphigus.org/

Hopefully other members can share their experience with you.