Your mother is attaining or nearing menopause
.Still better she is advised to undergo a pelvis scan to rule out other causes of abnormal bleeding at this age.
As far as the joint pains
are concerned it looks like Osteoarthitis/age related joint pains.Still better take a xray of wrist and hip joint to assess joint space, cartilage
etc...Treatment may vary from rest, pain killers ,physio exercises to surgery in advanced cases.