Rescued farm dog?

Rescued this girl about three years ago. They told me she was a border collie mix. I believe the border collie part because of her behavior, coat pattern, and facial structure. But I’ve never been able to figure out what the mix is. She’s MAYBE 30 pounds and that’s if she’s been eating a lot, and smaller than the average Border Collie, or maybe I just have a misconception of how big border collies are. Her coat also doesn’t have the long flowy look either. Any ideas what the mix is? I was thinking maybe terrier just bc of the size and shorter coat.

Rescued this girl about three years ago. They told me she was a border collie mix. I believe the border collie part because of her behavior, coat pattern, and facial structure. But I’ve never been able to figure out what the mix is. She’s MAYBE 30 pounds and that’s if she’s been eating a lot, and smaller than the average Border Collie, or maybe I just have a misconception of how big border collies are. Her coat also doesn’t have the long flowy look either. Any ideas what the mix is? I was thinking maybe terrier just bc of the size and shorter coat.