how to summon: 

you must be alone in the room you are doing this in.

turn off the lights and close your eyes.

chant:

"help me zero, its Ellis. im being beaten up again."

count to three in your head.

open your eyes and you should be able to see her. if someone else id in the room with you you wont see her, but the other person will be dead. 

if you summon her without a reason she will get mad and might stitch your mouth shut, so be careful.