"You want me to do WHAT?"
She isn’t going to want that horse stalled in her living room, even if they allow it. No matter how diligent she is about cleaning (and with her disability even that will be harder) the mess of the bedding material and the waste is not something that’s easy to manage in an apartment building.
There was a mini stallion who had a small stall inside a tack shop I used to go to. She let him loose to walk around the store. But horse smells are something tack shop customers are not put off by. ;~)
"You want me to do WHAT?"
They had some hellacious pictures of storm damage in your general neck of the woods . . . .