Before you commit to keeping her home, you need to know how she gets out of it. A house that works fine on a normal day can become hard to leave when the power fails, a fire starts, or she needs to go out with help. Walk the route now, while nothing is wrong.
Local option: New Plan Care gives families in the St. Louis area in-home help so a parent can stay home: companionship, help with bathing and dressing, meals, and overnight care. Call (314) 405-0887.
Walk it with her equipment
Start at her bed and walk the route she would take to the outside door, using the walker, cane, or wheelchair she actually uses. Time it. Notice every threshold, rug edge, step, and turn. A doorway that is comfortable on foot may be too tight for a chair with a helper pushing it. Note where she would need to pause and whether there is a place to rest on the way.
Check the doors
Every exterior door on the route should open from the inside without a key, or have a key kept right beside it. Test the locks yourself. Check whether a deadbolt needs a key on the inside, whether a storm door swings toward the person leaving or away from them, and whether a porch step creates a drop she could not manage. Ask whether someone who is not you could open the door in the dark.
Ask what happens when the power is out
If she would leave through the garage, ask whether the door has a manual release and whether you know how to use it. Ask whether any powered gate or door opener needs electricity to work. Ask your local fire department what they recommend for a home where someone uses a walker or cannot leave quickly. Write down what you hear and who said it.
Who is in the house when it matters
Ask every helper and every family member: if an alarm goes off at night, who gets her to the door, and what does that person do first? If nobody can answer, the plan is not yet real. Settle the answer before you commit and put it in writing where the helpers can see it.
Before you say yes
Compare what you found with what you have promised her. If the route only works on a good day, or only with you there, the house is not yet able to hold the promise. Fix the route, or bring in help that can, before the plan begins. For help finding support that fits your house, see local help for keeping her home.