You will need to talk to the building inspector for your community to find out what actions are required on the part of your landlord. If the construction occurred after 1978, there shouldn't be any asbestos in the drywall compound. If earlier, then the building department should know exactly what is required for a building of that age.
If the drywall is removed along with any other wet materials so that the wall space doesn't sit wet long enough to form mold, then mold should not develop from the new leak.
You can see if a lawyer will give you a free consultation to discuss your situation. If so, following consultation you can discuss what the lawyer might be able to accomplish for you and what it would cost, then determine if you want to hire the lawyer.

