What happens to the husband when a daughter sues for guardianship and money of her mother with Alz?

You need to check with an attorney and fast. Go on line to National Elder Law Attorneys and find one in your area. Good luck

Check out or Power of Attorney and Guardianship special section to find out everything you need to know regarding POA versus Guardianship.

https://www.agingcare.com/POA-Guardianship

Here are two articles that might help:

The Difference Between a POA, Durable POA and Living Will
https://www.agingcare.com/articles/difference-between-POA-durable-power-of-attorney-living-will-140435.htm

How to Get Guardianship of an Elderly Parent
https://www.agingcare.com/articles/how-to-get-guardianship-of-elderly-parents-140693.htm

Hope this helps.

That is a very interesting question. For most couples there is no "his" money and "her" money -- there is only "their" money. So, if Daughter got guardianship of Mom, what money does she have at her disposal for Mom's care? It would be interesting to hear from people who have seen similar cases.