She stays in a stall where it's quiet and still comes out and has overload syndrome ,take some time to put her in an arena round pen whatever and just put her there don't look at her and start doing strange things,get a bucket a leadrope some brushes invent a chore, if random activity some one walking by ? occurs go toward it and invent something to laugh about, shout across the arena pay no attention to her if she spooks just pretend she's not there if she sees you're not freaking I'll bet she'll come over to you if she does just give her a lttle hey how ya doin ' rub and keep on being weird,just don't direct it at her,pretty soon she'll start to like weird,because it beats being bored in a stall. You don't have to worry about it because you aren't 'doing' anything with her. Horses learn by example if you worry they worry if you're ok they're ok. just work it out in a controlled environment,singing if you like