Whippet Mix: What Kind of Dog do I Have?

We rescued an abandoned dog and do not know what breed she is.

Is she part Whippet? Here is a picture of her.

We do not know how old she is but her teeth are perfect and very white as most puppies are.

She does not chew up anything in the house, she is rather docile while inside. She's fast enough to catch the squirrels and eat them.

Hoping to find some answers.