Hi,Welcome to HCM.Based on the facts of your query,Your Mom seem to suffer from 2 entities-
Cerebral Concussion with Butt Lump from traumatic
Hematoma.
Treatment Suggested In My clinic would be-
Antibiotic cover/Tab NSAID like Mortin-
USG of the Butt Lump and Skull CT scan to asses the damage to the butt bones / tissue and damage to Brain Tissue.
Wait and watch for 72 hours to rule out any deep injury to brain and the butt bones.
Second Opinion from-Ortho-Pedic and Genl Surgeon would fix the treatment after proper evaluation of the case.
Hence I would suggest you to go to ER,to rule out the Risk of
Head Injury with
Brain Damage.
HOpe this reply would help you to plan further treatment with your doctors.
Contact with a Followup Premium question to ME. Will appreciate your Hitting thanks and writing excellent review comments to help needy patients like you. Good Day!! Dr.Savaskar, Senior Surgical Specialist M.S.Genl-CVTS