[quote=cvmom]
Assuming she decides to stay in the apartment, it sounds like you all think that no matter what remediation is done, it will not be sufficient. Depressing but still good to know.[/quote]
If she does stay would suggest this:
Find all sources of moisture. Leaks in the roof, or from apart above. Leaky sinks, etc. Places in the bathroom where caulk has dried out and water can get behind boards. Fix those.
Removal of all materials (wall board, studs, baseboards) with mold or exposure to the moisture. You can’t just dry out moldy areas, you must rip them out and replace them.
Thoroughly dry out any areas with moisture.
Replace all materials, making sure that enclosed areas are dry and will stay dry.
Remove all carpet and replace with materials less likely to hold moisture or mold.
I have my doubts the landlord will do those things, but there they are.