Re: your mom - just know that dementia can be worsened by infection (an asymptomatic bladder infection often caused my mom's cognition to slip) or medications (many elderly are on multiple medications, many of which can cause cognitive problems. My mom had this with gabapentin).
She may also appear worse now that she's in your home - people with dementia can mask a lot of it when they are in their familiar surroundings, but move them out and the gaps begin to appear.
