Which state are they in?
I spent 4 1/2 years doing title insurance, so I know a little bit of legalese surrounding community property stuff. I actually had a title that I did that was similar to what you're describing. It came in as a refinance (wife and her new boyfriend):
Husband and wife are mid-divorce, and he offs himself (.45 to the head). Wife continues to live in the property. Husband's probate is done, giving all of his estate to his PARENTS. (He'd had a will -- named parents as executors, they took everything.)
Wife still has an interest in the property, obviously. They bought it together. The question is -- did his interest pass to her, since Washington is a community property state, or did his parents inherit a half-interest in the property, leaving the wife with only a half?
We ended up having to negotiate with the deceased almost-ex husband's parents to get a quit-claim deed for the wife to refinance the property. They were absolutely livid. I, in my prim little office, got to listen to a couple of 50-somethings go off about "the horrible cunt who ruined our son's life and drove him to suicide." It was ugly.