Frightened and Alone !!!!!

Johnathan gets home normal time on a normal Friday night to find his mum wasn't home. Assuming she was running late he made himself some food and watched The Exorcist.
When the film had finished he went upstairs to his mum's room where he thought she was sleeping but to his surprise she wasn't sleeping she was hanging off her lights with rope around her neck ........... what will Johnathan do will he ring and ambulance or will he go to his neighbours or just leave her body there????