standardbred training

Question
I own a 4 year old standardbred mare that is being trained by someone else, however, we raised her from a few weeks old and broke her to harness and line drove her behind a jog cart on our farm before turning her over to this trainer to get her ready to race. She is in training now but after a bout 6 weeks of training she developed the habit of "counting laps" and trying to come off the track after 2 miles( 4 laps) It has gotten worse now. She will just come to a dead stop and refuse to go on at all at any point in her training miles. We had her blood checked by a vet to see if there was any physical reason( tying up) for her behavior and everything appears ok.She has no apparent lameness that would be causing her to stop on the track either. She eats very well and is not mean in any way appears happy but refuses to train. We did not do much with her as a 2 and 3 year old ( after breaking and line driving her)due to financial and my health problems and she just led the "good life" on our farm running and playing in pastures.Could she have the mind set that she doesn't have to work for her keep? Any Ideas or possible solutions to this problem?  Thanks

Answer
Hi Rick.
  It certainly seems that your "wild child" doesn't like working for a living! It appears some corporal punishment is in order.
  Many years, I had a two year old pacing colt who was jogging and he was run into by a horse turning to go a mile. He wasn't hurt (it really wasn't much of a collision) but it scared the wits out of him. From then on, when he approached the top of the stretch going wrong way of the track he would try to pull himself up. We had several people stationed at the spot where he tried to pull up armed with things that would make noise: a whip with a plastic bag on the end, pots and pans and something to bang on them with, a tambourine, etc. When he started slowing down to pull up, the people would start making noise (to distract him) and the driver would give him one GOOD crack with the whip and yell "NO!" It took the better part of 2 weeks but he did get over his bad habit and went on to be a fairly nice colt.
  Does your filly do this both jogging and going the right way of the track? Another thing you might want to try is entering and exiting the track through different draw gates, or jogging her only the right way of the track.
  Hope you get your filly going! I'd love to hear how you make out. Best wishes!
Anne Stepien