Name New Girl

Bossman told me that we'll have another teacher starting in January, so I need to find a name for New Girl in case the new teacher happens to be female. Here's what I've come up with:

1. Daft Bint - this one doesn't work. She's not (usually) daft, nor is she a bint.

2. Secret Smoker

3. Driving Girl

What are your ideas?