Thanks for writing your query.
After reading your post, I would suggest that she should be investigated also for:-
1. Platelet count
4. Blood pressure and pulse rate monitoring.
She should take care of her diet.
She should include fresh fruits and vegetables in her diet.
She should also drink lots of pure water daily.
She should take Vitamin C
supplements in addition.
If the problem persists, she should seek medical attention.
I hope this is helpful to you.