Clarke gives a number for this condition. Conium, Iodum, Ustilago, - also for milk disorders - Phytol, Piper nig, Uran nitr.
Unless the girl is pregnant this must be a glandular disorder. - an upset of the endocrinal system.
In Agrawal's Mat med of Glandular medicines he suggests Thymus for glands that are over active.
There are a number of Milk Nosodes in the Materia Medica of Nosodes . I have used Lac can to reduce overproduction of milk in nursing mothers.
Hope this is of some help.