Any advice caring for someone with Alzheimer's and dementia, small stroke and blindness?

Hi. My mom is 90. She's had macular degeneration for years, and can just barely see anything going on, leaving her pretty much functionally blind. My hubby and I put on a room for her about 20 years ago, and she's been here ever since. I fully intend to see her through until the end. 2 weeks ago, I could tell she was altered and took her to the ER right away. They kept her overnight, and basically just gave her fluids. Her BP was up, which is very abnormal for her. I'll spare you all the details, but they believe she had something like a TIA. Way less than a stroke, but more than a TIA. Since then, she's had lots of weakness in her legs, and has gone from her cane to a walker, and a wheelchair if she needs to be on her feet more than 4 minutes. Her mental capacities are diminished. Just a few weeks ago, I was OK with leaving her alone for 6 or 7 hours once a week, but no longer. I've found a friend that can sit with her while I'm gone, and I just got her set up with Medicaid, and hooked up with a 'care organization' that work as a team to figure out her needs and mine (thank heavens!!!) I feel like I'm floundering. We've suddenly gone from somewhat dependent (due to the blindness) to not being able to leave her alone at all. She's not that out-of-it, but just enough to forget her cane, etc. It's like telling someone they're just a little too drunk to drive, in spite of their protestations to the contrary. Is there anyone else that's caregiving for someone that's blind? Is there any advice for anybody about things that I'm not thinking of? Any and all advise would be incredibly welcome (and I guess I just need to whine a little, too, if I'm to be honest with myself ;-) ) Thanks! Sandy