How do I find an Adult Day Care in Lehigh Acres, Fl?

Two years ago, my 85yr old moms youngest daughter past away from colon cancer. My sister had 1 daughter who is now 31yrs old. She moved in with my mom as soon as her mom died. My 2 brothers & I thought it would be fine for short term. We thought it would be good because my mom would have someone with her but we never asked her to be a caregiver. My niece ended up quitting her job after her mom died too. Since my niece moved in with my mom, my niece somehow convinced my mom that she no longer needs her 3 living adult kids in her life. So slowly my mom became distant with her 3 kids....Now after 2 years, my mom completely disown her living kids...she doesnt talk to anyone. We cant even get any info from my niece about my mom and her health. My niece tells us its none of our business how my mom is doing...My niece told us that she is autistic...she has no family other than us and she has no friends. We are afraid when our mom dies we will never know... We all miss and love our mom and we used to be very close to her before our niece moved in. My mom isnt the same person since my niece moved there and our niece wont let anyone in my moms house. Is there anything we can do...? We are afraid my niece is controlling our mom. Also, my niece has been abused by her own mom, most of her life and by my dad when he was a live. We feel my niece is using my mom too.. because she doesnt work... What can we do, if anything...please help us..We need some advice. We love our mom & truly care about her... Nothing that my mom is doing is normal behavior...Our niece blocked us from my moms phone and from facebook too. Very strange behavior from our niece... We want to be able to see our mom and talk to her before shes gone...thank you