An old friend suffers short-term memory loss and is becoming physically abusive to staff and other residents. How can I help?

It's something I haven't experienced with her, but is becoming a regular (but valid) complaint of the assisted living center where she lives. Mostly, I think she is bored, healthier than most residents, but hard to engage because of the memory loss. They are pushing for increased anxiety drugs. I've tried talking with her, and she feels very badly about her actions - but she doesn't remember them - so there is no amount of agreement, counsel or even threat that can be exerted to help her alter the events. Moving is an option - I just fear that the behavior will go with her. I hate thinking that drugs are the only option. How do others cope or help in a similar situation?