Merve tried to avoid going to the restroom because that is the place where bad things happen in high school. This is a hotel and not a school, but it's full of high schoolers, so it's almost the same.
Unfortunately for Merve, she had two glasses of the fruit punch and one sparkling water and the pressure in her bladder was building up.
Merve mentioned the restroom twice, but she didn't gather the courage to go.
"Do you want me to go with you?" Corey offered when he saw that Merve is hesitant.
Merve looked at Corey expectantly. "Can you?"
Corey laughed at her innocent expression. "I can't go inside girls' restroom without causing an uproar, but I can wait at the door. In the hallway. If any monster attacks you, just scream, and I will barge inside and kick his head off."