What is the Likley Outcome of Plastic Surgery for a Deep Chemical Acid Burning in a N 11 YO Female Chest and Abdomen? (photo)

My kid is an 11 year old now and had a chemical burn deeply 9 years ago followed by a skin graft surgery, the scar keeps growing with her in most of her chest and abdomen, assuming that there is some kind of plastic surgery that could help her, how high or low my expectation should be after the surgery? I attached a current photo for review, I am interested in in- person consultation if needed. Thank you so much.