Exactly. When she can’t get unfettered access to recreational drugs and booze she does a lot better.It's a catch 22 with WW - if they leave her (alone) to her own devices she abuses herself and ends up in the hospital/rehab, etc. If she is monitored, which apparently includes living in a long term care facility, her mental/physical health is better and she's lucid, chatty and mad.
There are medications that help the symptoms of dementia, maybe she is taking those.