Welcome to HCM,
Lump in the vagina can be due to genital herpes
, bartholin's cyst
, infection ( HPV), genital warts, poor hygiene resulting in clogged sebacious glands, etc.
She should be clinically examined and diagnosed. She needs to go through blood tests ( to rule out STD ), vaginal swab tests, pap smear
examination and biopsy
depending upon the findings detected.
Genital wart infection show their manifestations in 2-3 months, avoid unprotected sex and multiple partners. Get her treated well as it may lead to life threatening complications later in life.
The treatment is removal ( though some disappear by themselves, but are infective and harmful for health ) by electro-cautery, laser treatment
or excision by surgery.
Do not make your own conclusions. Let a doctor examine her, take care.