PT caregiver is really great but should we be concerned?

Just started a couple months back with daily afternoon companionship for Mom (with dementia). She lives in her own home and this is the first step to her accepting assistance. She's very healthy and mobile but has dementia. We've focused on 'companionship' and the extra socializing has helped her allot. The first girl we found is really great. Even our neurologist was surprised at how great our caregiver is and that Mom is better.

She does cooking, crafts, laughing, and keeping things upbeat for Mom. She even calls her Grandma and Mom loves her. Her personality and disposition are great. The issues 1) she leaves little notes for Mom to call her daily (creating a habit), 2) she highlighted her speed dial phone button so Mom knows to call HER, 3) she calls Mom 1-2 a day even the days she isn't there, 4) she put her number in Mom's purse for emergencies, 5) she has recently gotten in the middle of years long family strife (between us present/involved family members and those not present/but critical family members). I had given her a heads up about what was going on because Mom talks unfiltered and has had upsetting episodes and I've had to clue her in because of her integration in Mom's life. We hate that she got dragged into family politics. Now I fear I have to somewhat filter our almost daily conversations. She calls after every visit with Mom.

We know she dos a great job with Mom and would hate for Mom to lose that relationship but should these things alarm us?