She is suffering from candida vaginitis , give her two tablets of secnidazole
She can put vaginal pessaries having clindamycin
and micanazole like mazocan pessaries or myconorm-V pessaries.There is a vaginal wash with the name of V-wash to maintain the pH of vagina.
you can also take tablets fluconazole
150mgm weekly for 4 weeks along with metronidazole
400mgm twice daily for 7 days after meals.local aplication of neosporin ointment and surfaz - SN will help.