Hi. Thanks for your query. There are many stages through which a wound healing takes place. Every person s response and outcome to a given injury is different. In case of your daughter , the wound is going through the normal stages of healing and getting hard is indicative of organization of a hematoma. Please give her anti-inflammatory medicines and multivitamins for a better recovery, avoid exposure to the extremes of cold and / hot. No local applications at all, they do not help. You may consult a cosmetic/ Plastic surgeon since the patient is a female ( daughter ) and needs proper care.