When I bring the horse I lease to shows she gets very nervous if she is sitting at the trailer without a horse she knows right near by. Do you know anything I can do to help her calm down ?

use a hay net to give her something to do and try to spend time with her if you can.
Lavender oil will clam her my horse gets upset when ever his buddy is not with him I put lavender oil on him and he clams right down also there are claiming supplements you can use but if you want a cheap way I would use lavender oil but if that does not work I would use the supplements
Additionnaly, you can put some hay and water nearby, and put the hay in the net or a toy so she has a distraction...
Keep exposing her to shows and hand were her around as soon an you get there. Give her treats and lots of pats and praise :)
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