Thank you both and everyone else from this thread who is posting on my FB wall!

We didn't know until yesterday afternoon. The social worker wanted to have a meeting with us. I had been trying to get in touch with them so we could get her on a list for assisted living, so I welcomed the fact that they wanted to meet. I should have known that since they wanted to meet "urgently" ie, yesterday instead of this morning, meant something bad.
We just found out this morning, and I can complain here, since none of you know anyone in my 3D life, but on Sunday she and my house boy went out to buy laundry soap. They entered her building through the "prohibited route" (ie stairs with no railing). After all we did to build the ramp, put in an extra railing and make it possible for her to enter the building through a route with no steps, she tried to climb the effing stairs in the front of the building. Well evidently she fell backwards onto the sidewalk.
The neighbor and my laundry boy helped her back into the house and she threatened them not to tell us about this. We just found this out this morning. When I saw her Sunday afternoon, I know now what I thought was exhaustion and morphine was a concussion. Had I had any brains I would have taken her in, but she had been like that before because she often overdosed herself on the pain pills. Hindsight is always 20/20.