Yes you can help her, by taking her to her doctor for a thorough evaluation of her condition.
She may have a prolapse of one of the internal organs, or a slipped disc.
Possibly the sciatic nerve being pinched and the muscles around it have gone into spasm.
If this is due to a prolapse (slipped disc), her doctor will give her some relaxant medication to relax the muscles that are in spasm.
An anti-inflammatory and pain relief.
She needs to see her doctor as soon as possible.
Let us know how she gets on.
Best wishes.
It is possible that she might have a cyst. I would tell her to go to the GP and have an ultrasound done.
One question though. How is it not possible for her to get pregnant? Has she had her tubes tied? Hysterectomy? This might also help if I knew.
Yes, you can get her medical attention. This might be something you can't handle on your own. Blessings - Blu