My girlfriends friend is being attacked by a spirit named Maron sound familar to anyone? She jumped off a bus and got seriously hurt. What can I do to stop this thing please tell me? Thank You HAIL Satan and the gods of hell

I've been trying to access shapeshifting. Does anyone know of ritual or something to help me other than summoning a demon because i already know of certain demons that can help. Thank You HAIL SATAN