My horse became barn sour at one point. He is very sensitive though and a stern voice and leg did the trick for me.
I second making the barn mean work. Make going out relaxing.
Make being at the barn mean work, away from the barn means relaxation. So work her at the barn and when you leave the barn let her relax, just walk maybe graze a little.
Ok.!sorry I don't no what Else to suggest .but I hope it starts working out better for you .!
Well we have snow right now where I'm from, but I do go out with a buddy mostly everytime, she will litterally just let her buddy walk down the road and not worry about her
Maybe try going out with a buddy
Make around the area a good thing by let's say .let her eat grass or do something that she likes doing .like if she is a play full horse then make it fun for her to go out.just a suggestion .!