She and June have a best friend relationship. They always hang out together and figure out the mystery.
She and Thomas have a brother-sister relationship. Nancy hides behind Thomas when someone meets her cause she is scared. Thomas is always gets worried about her.
She and Sonic have a shy love relationship. Nancy loves Sonic ever since they met, but she never admits it cause she is shy. They tried to kiss, but everybody always interupts them.
She and Molly have a partner relationship. Molly is great friends with Nancy, they work together to fight villians.
She and Aqua have a team work relationship. Aqua always sends Nancy good luck charms for her work. They work as a team.