Thanks for query.
You have not mentioned her age.
If she is elderly and seeing her all symptoms it is likely that she might be having some degenerative changes in her lunbo sacral region and cervical region causing these symptoms.
That means she might have osteoartheritis changes in spinal column and knee joints.
It is also possible that there might be Osteoporosis
Consult orthopedic surgeon and get examined.
Ok and bye.