Seems a bit young for that, but "it is what it is" as they say now. Anyway, there are pretty standard treatments for this. Proper testing for causes and diagnosis is first, then tailor treatment to the specific case. Long term results should be excellent.
Standard treatments are surgery, antithyroid medication, or radioiodine. Not my field, so I don't know if the I-131 is appropriate in young females, but the endocrinologists will advise appropriately.