Hi, first of all to avoid swelling if she has any get the sticking from foot to thigh to all fluid to drain Secondly ask her to mover her ankle up and down in full range ever 15 mins Thirdly keep her leg elevated whenever she is sitting or resting and no position either sitting or standing allowed for more than 15-20 mins at a stretch She need to change her position or take a walk every 20 mins- 30 mins There are other exercises that help with pain the calf and legs that I can suggest