Posted 10/13/2016 2:16 PM (GMT -7)
First Tristen's Nana,
Let me say that you and your sister are wonderful daughters to take care of your mother this way.
When my mom died, it was decided at the funeral my dad would move from NJ to DE to stay with me. Both my siblings worked, so this seemed to be the logical solution to them.
We also had a two-story house, so I turned our den into my dad's room. It was really dreary at first, but I tore out the carpeting, so he wouldn't trip with the walked, and I put in a card table 4 feet from the tv so he could watch it.
I would be concerned about the steps. There are gates that are stronger than ordinary baby gates that can actually be attached to your walls. I kept the doors to the garage and basement locked, so he wouldn't open them and fall down the stairs.
Even though your mom is upstairs, I would still "adult proof".
If your mother can still understand notes, you could put notes on her door and in her bathroom to remind her where she is. We had a cat, Will, that seemed to understand my dad needed him, so he hung out with him all the time. The other cats were aloof.