My biggest concern is at night when she gets out of be to go to the bathroom and falling. We did find her on the floor next to her bed. she had a bladder infection and so sick she couldn't hold herself up and fell down. Now Im not sure she can get herself back in bed at night after going to the bathroom and that we can still care for her responsibly.
Of course, if she is quite lightheaded from the bladder infection, someone would need to help her, but it would be up to her to ask for help. *Depends* are helpful but it takes a learning curse to get use to using them, one rather attempt to walk to the bathroom instead.
Beyond that the bedside commode and alarm pad may help.
But also keep in mind that most people with dementia do reach a point where they need around-the-clock supervision. This typically means 3 shifts of people who are awake, alert, and ready for a shift's duty. If there is enough money you may be able to arrange this in your home. Otherwise it might be best to consider a nursing home for her. (As long as what she needs is "assisted living" you can probably arrange that in your home. But if she is beyond that level of care, a nursing home should be considered.)
I hope the less drastic measures give you both relief and that she she returns to a less intensive care need when she is fully recovered from her infection. But try to stay realistic about what can be done in a private home without 3 shifts of people to give care.