When is it time to move my grandmother?

My grandmother is in her late 70's. Widowed. She lives alone in an apt but cannot drive (no car and not physically able). She has to depend on family to grocery shop, run errands, etc. She must use a walker to walk. She cannot run or move quickly. She is in an apt complex for 55+ but stays in her apt all day and night watching tv. It is a production for her to go anywhere and she can't spend a lot of time out and about. She is diabetic. She is good at taking meds, having conversations, texting, cooking small meals (and paying mind to her diet). She watches church daily and shops Amazon. But will sometimes have to wait days for toilet paper, toothpaste, paper towels, milk, etc. Because she has to depend on someone to get these items.
But last night she fell. And was on the floor for 2 hours until an uncle could help her. She has Med-Alert type tag but it was not on her. I am so upset. I hate that she was on the floor.
She has 7 kids. No one seems to want to help her. Just bring her things. Which is great but it seems like they are ignoring the larger issue which is that she can't do a lot on her own.

Am I being unreasonable? My husband and I are worried for her.
She has a master's degree. She is such a smart, spirited woman. It breaks my heart to see her this way. I just feel she deserves much better.