We have tried web doors, solid 8' high wooden doors, chain, rope, tied her in, all to no avail. The wood doors worked the best, but she broke the wall down to get out. She is built like a bulldozer! Oh she is in with another horse, who does stay in, so she is not alone. My horse is the only one out at the time.
She has stall toys, hay bag to slow down the hay consumption when in the stall and none of this works, she just wants to be out!
So in desperation I ask for any suggestions, things that you have tried?