You, Susie and Noelle had to go into a darkworld that was created in Noelle's house, and in that darkworld you found Carol Holiday, Noelle's mother as a teenager, with no memories past that age. You figured that it would be fixed once you got out of the darkworld but she's still your age

Susie: Uh... Shouldn't she be an adult again

Noelle: Mom?!

Carol looks annoyed at Noelle

Carol: stop calling me that