Under armour childrens winter jacket

This jacket is a beautiful winter coat, worn for one season by my daughter. Warm fluorescent pink lined, hood does not detach. There is a little wear on the cuff but hardly noticeable. There is a small opening in the outer shell lining where the thread came loose under the left armpit about 1 inch. There is no tear in the fabric, could easily be handstiched or just left as is as it’s only the outer layer and not at all noticeable. Would fit size 10/12 is my guess