I think she'll be just fine. :) She has extra hay and bedding in her stall and the barn is considerably warmer than the outside even though it isn't heated. The doors are closed and the crazy amount of square bales gives it some insulation. Hopefully she'll huddle up with the other horses outside. They all go out every day regardless of weather because horses are very hardy creatures and they need outside time to thrive. I got Sandy into a pretty good condition for this winter, so I'm not too worried about her. I'll always worry a lil bit tho lol.