WbF:
I'm not experienced or knowledgable in such things, so the best I could do is likely what you've already done: Search Google. Some of the top matches seem like they might be able to help provide some direction.
https://www.google.com/search?q=lawyer+for+mold+lawsuitYou may have already seen the top matches, but maybe not. Even slightly changing the search terms can yield much different results.
Also, sometimes it helps to use a different search engine. Here's the results from DuckDuckGo for the same search terms:
https://duckduckgo.com/?q=lawyer+for+mold+lawsuitI'll keep searching for resources and thinking about
things that may help. I'm very sorry for this nightmare situation you and your Mom are having to endure.
Dude