Thanks for asking the query,
Infection of the gums mainly occurs due to poor oral hygiene
, plague and calculus deposition.
Bacterial and viral infections worsen the condition. Use of some medications, hormonal
changes systemic conditions like diabetes
, vitamin deficeincy, habit such as smoking can also lead to such changes.
I would suggest you to take your daughter to Dentist
and get the thorough checkup done, take an OPG radiograph, go for symptomatic treatment of complete mouth scaling and polishing.
Maintain a good oral hygiene, use lukewarm saline rinses and antiseptic mouthwash gargles twice daily.
Start with multivitamin
Take complete balanced diet with lots of water.
Hope this helps out.