as you mentioned histroy of herpes zoster
..this justifies the reason behind the pain in joints .
wht was the sight of herpes blisters. after pain is very comman . burning pain is the type of pain.
this age requires lot of nutrition in terms of macro and micro nutrients also.
if the gym excerise is not a must then i will advise you to shift her to yoga
. as it will be beneficial for proper posture of various joints .
lots of fruits, dry fruits, vegetables , ' shatavari kalp ' powder 2tsf twice with milk is must for her as a general tonic .
feel free to ask or mail at firstname.lastname@example.org
wish u helath