She was the Chipmunk's teacher, and the love interest of Toby Seville.
Backstory
She went to school with Toby.
Primeval: New World
Alvin and the Chipmunks: The Squeakquel
She became the Chipmunk's teacher, and helped them practice for the sing-off. At the contest, she bumped into Toby, who nervously held out his hand to shake hands, but she embraced him, starting the relationship he wanted since his high school days.
Creatures encountered