Demon summoning gone wrong

Camilla wanted to punch a wall. Just when she needed it the most, she felt her powers getting weaker. Too much emotion, making it difficult to concentrate.

-For fuck sake !

She shook her head. No. She had waited for this moment for too long to stop now. She would just need to adapt her strategy. There were many sources of magic, some more powerful and dangerous than others. She leaned forward and quickly draw a pentagram on the ground. If she couldn't destroy her rival herself, maybe an ancient evil would help her. In her hurry, she wasn't exactly sure she had done the drawings exactly like her book had indicated but anyway, she started chanting in an ancient language.

-Peter...who is this woman...what is she doing?

Laura, Peter, and their children were looking at the scene with a worried look. Meanwhile, the drawings on the ground started to glow. Soon, a large shadow materialized above it.

-Demon, shouted Camilla. I summoned you to do my bidding. You will serve me and slay my ennemies.

The laughter that echoed after Camilla's claim terrified everyone involved. Soon, a deep, maleficent voice, oozing pure evil, could be heard.

-Foolish mortal, you think a feeble barrier of protection like this one is enough to hold me? Before I return to the underworld, all of you will suffer from my wrath.