Thanks for writing to us
Since the bony injuries have been ruled out, a soft tissue injury
is likely. She needs to avoid massaging the area and take a mild pain killer for relief. Avoid sitting for long hours. Do a cold
compress on the area of injury.
The pain and swelling might take over a week to subside. In case there is an acute pain and a sudden increase in swelling then consult a physician for a direct examination to rule out any infection in the area.
I do hope that you have found something helpful and I will be glad to answer any further query.