Here's a quick video to show a small part of why I'm considering some, er.... hormonal help for Hellbitch Herself. She did this for approximately an hour before I convinced her boyfriend to come back and calm her. Assuredly, she's doing it again right now, and will continue to do it all night... and will do it all week. She won't eat, sleep, drink, or stop running unless her boyfriend has his nose up her butt.
This stuff, plus her serious misbehavior under saddle and on the ground, plus being unable to catch her, plus tearing out half her tail from humping the fence.... yeahhhh. It's pretty high my the list of 'worst hormonal issues ever.'
(The tail wrap is from trying to tame it a little after washing it... it was sticking up in all directions. It was only temporary until it dried!)