Re: Afraid of spray bottle?
How new to you is she? Is she also at a new barn?
When I first bought my horse (and brought him to a new barn), he was very jumpy about everything. It was summer, and I couldn't even spray him with fly spray (I had to get rub-on foam).
But now that he knows and trust me...and he realizes that he's gonna have to stand in an empty barn for a few minutes each day while we tack up...I can spray him all over and he doesn't care.
Also, I'm sure you know, horse's skin is very sensitive...they feel that fly and can twitch just that specific part of their skin. Probably when the droplets of Show Sheen land on her coat, she feels a bunch of little bugs attacking her!! Not to mention of sound of that scary spray bottle!!
You could start off by applying the Show Sheen with a cloth...then she gets used to the scent. You may even want to get a spray bottle with water in it and spray around her (not ON her) while patting her or giving her treats. So she gets used to the sound. Then, after she's okay with that, pick an area and rub/pat that area until she's bored with the rubbing, then give it a little spritz. If she jumps, keep rubbing the area (and get show sheen all over your hand!) Just keep reassuring her that the spritz isn't going to kill her and she's a good girl.
Just start off slow and soon enough she'll learn that the spray bottle is not a threat (or she'll just learn that she can trust you through anything you do to her!)