Geodon and mouth shut

i recently moved a family member into my home that takes geodon and a few other depression pills. i have a hard time trying to figure out what she is going through because some days she talks and is ok others she flips out and goes off by herself. I often notice that she has trouble walking.(she takes baby steps) and she can get really mean with my kids for no reason at all. What should i do? Should i keep my mouth shut and let it continue or try to stop this behavior anyone with advice would be a help. thanks alot!!!!!!!