Just look at her name:
Baby Boo-Boo.

She's no baby!

The word drives her wild in a big, bad way.

And here's Mama Mouse calling, always calling after her,

"Baby! Where are you, Baby?"

It's humiliating.
Mice (and other small persons)
will understand what
Big Bad Boo-Boo does.
It's quite naughty.