ester
Not slacking multitasking
She will be pulling shoes because her feet are too long, get farrier to give her a good short trim and replace with correct size shoe, keep hind feet short so she wont overrach, the damage could be a possible 1/4 crack forming from the overreach
Not necessarily and a 'good short trim' could be detrimental to an already lame horse, I really don't think you can say that without even photos/seeing hoof in the flesh.