Join Date: Aug 2009
Location: New South Wales, Australia
Lots of horses don't like shelters. When I moved my horse to a new place we had a walk in shelter. In the beginning she would never go in there, and if I led her into the shelter she'd go in but be very uncomfortable.
In the beginning I'd just feed her a couple of metres away. Then I moved the feed closer and closer, and now I feed her inside if its raining but outside if its not. She'll never go in there without feed on her own - but that's to be expected. Horses are animals, they're not meant to live inside and I personally think that it goes against most of their natural instincts to do so. Some will do it but most won't. Horses are generally fine outside if they've got enough trees or windbreaks.
Also keep in mind horses are herd animals, some of them function alone, but many of them can be very distressed when kept alone. For this reason it's usually a good idea to keep at least two together.
Check your hay too, if its damp or animals have go to it your horse won't eat it. It might be worth feeding her something she'll like as well as just hay - like I feed my horse a mix of a lot of chaff with a few pre-mix pellets. She'd just pick at the chaff, throw it around, but with the other stuff mixed in she'll eat it all.