This is a sad situation. One has to wait in this case for some time. If inspite of swelling gone the patient is unable to lift the lid, this points injury
to either muscle, levator muscle or to its nerve
supply. In any case this thing needs observation for minimum 3 to 6 months to see the amount of recovery . meanwhile an oculoplastic consultation will be of benefit for her. Once things settle down a definitive solution to her lid position will be possible. At present it's too early, however see an ophthalmic plastic surgeon for proper assessment of the situation.