Will my horse stop passing?

Brief：
My horse is 1 1/2 years old and we bought her about 6 mounths ago and we put her with some other horses and then after a mounth and a hlf we brought h.. 

My horse is 1 1/2 years old and we bought her about 6 mounths ago and we put her with some other horses and then after a mounth and a hlf we brought her home and now all she does is pase.We are getting another horse but thats not until about agust or september.Until we do get the other horse what are some ways to make our mare stop paseing?

It's not fair to keep a horse alone, they are herd animals. She is pacing out of stress because she is separated from her herd, a horse that is only a year and a half will be especially stressed out by being alone. Human companionship is not enough for horses, they absolutly have to have another equine companion. You should have waited and gotten both horses at the same time. I would strongly suggest getting another horse right now, if that is not an option, try and ask around and see if anyone needs a temporary place to keep their horse until you get another one. Maybe board your horse some place for the time being. If worst comes to worst a goat can be a decent companion for horses (meaning better than nothing), but they are still happier with another equine. Look into getting a donkey, they are low maintinance, great companions for horses, and really sweet.

There isn't a whole lot you can do to stop your horse's pacing other than getting her a companion...It's cruel to keep a horse alone. Also, a horse that is stressed out (which yours is by the sounds of it) is a lot more likely to colic, which means you are potentially looking at a huge vet bill. Sounds like a neurotic thing- that happens if horses are put in isolation (sounds like yours is) or in stalls with no outlet for stress.