Hi, Welcome to HealthcareMagic Forum.
Ask her if she has any foul smelling vaginal discharge
or pain abdomen? Does she have itching? If the answer is Yes, then she has a vaginal candidiasis
or Fungal infection
of vagina. She should be getting herself examined by a Gynecologist as she will require anti fungal Medicines. If she has no foul smelling discharge or itching, then it is not the cause for worry as it could be the normal cleansing Process of vagina where the vagina tries to clean itself and removes the unclean material in the form of white discharge.
I Wish her Good Health, Take Care.