Hello. I'm sorry your sister is having this difficulty. Has it resolved? While it 'could' because of her fall, that she has diabetes without controlled blood sugar and seems to have suspected neuroathy in the past, I strongly suggest she see her doctor. Changes in sensation like that IS a symptom of diabetic neuroathy and she needs to follow up . I think her doctor is going to want to address the issue of her sugar levels as well. Let us know how she is doing.https://www.mayoclinic.org/diseases-conditions/peripheral-neuropathy/symptoms-causes/syc-20352061