It's "Yes" with an E!

When Heather and Stacy see Chloe shopping alone and missing Nora, they proceed to make fun of her, which infuriates Nora and defends her because she came alone for her. When faced with the choice to hang out with her new "friends" or her "baby sister", Nora promptly calls the girls out and ditches them.

Example of:
Big Brother Instinct