A lady on our yard has a lovely mare (14 hh ish) she is not very confident rider but is fine just walking and trotting and she was told this horse was ideal for her, she has had her quite a while and she is great in the stable and field but she cant get her out of the yard. She will be tacked up okay but only walks a few steps then stops her tack all fits well and she doesnt seem to be in pain she has tried going out with others but no good she still stops. Last week she has asked an experience rider to take her out and the first couple of days she managed with another horse accompanying to get her down the lane and onto a small estate and back again on the 3rd try she messed around going off the yard so they decided to stick to a bridle type path but she only got about 500 yards and started to back up and almost knocked the other horse down a ditch, she doesnt buck or rear just wont move or walks backward owner is now at end of her tether anyone else had experience of this.