during the prepubertal hormonal changes the mucosa of the vagina becomes thin and easily cracked , some times these secretions can have a bad smell if it s inhabited by bacteria or fungi . the fungi such as candida does not appear in the routine culture of vaginal fluid and puss cells are not usually seen . desatin cream is zinc oxide cream and it will not do much In this case. single dose of oral fluconazole is very helpful plus a betazol G vaginal cream . though it s rare , but foreign body is suspected because of the blood and the bad odor , which is can t be pretty much excluded through a careful examination. I hope this helps