Well, indeed: who? It's funny how a search for one artist (in this case, Mindy Smith) leads to the discovery of another (The Gabe Dixon Band). It's not country but it isn't non-country; it's rock but neither soft nor otherwise. It's a little bluegrass, a little not. You need to give it a listen to get it.
And, yes, Mindy's on there for one song, the lovely Further The Sky.