Hi...she shoud be examined clinically to asses grade and type of acne...depending upon clinical findings treatment can be planned as there are many ways....Diet therapy, such as a low-glycemic diet and avoidance of “junk foods,” has been suggested as a nonpharmacologic measure to manage acne vulgaris Procedural treatments for acne vulgaris include the following... Manual extraction of comedones, Intralesional steroid injections, Superficial peels that use glycolic or salicylic acid consult dermatologist they will do the needful