Jaz is doing amazingly I am sure it helps being 15 not 64!! I suppose you will need to let her find her feet (literally) with the least potentially damaging request. Maybe if she is allowed to go to the nearest place, she will get exhausted without too much danger. Oh the joys of parenting - keeping safe but letting them learn. Must be hard for you with the added dimension of the op. It must be great though to think forward to months in the future when you can do real family things together again.
You must reward yourself for all you have been through, all the support you have given to others - some "me time" is definitely called for!!