Thanks for replying, I was hoping you would.
She gets ridden 5 days a week, 2 days pleasure hacking, 1 day possibly jump training, if not hacking, and 1 day intensive schooling with trainer, the last day is normally me trying to put into practice what my trainer covered, or lungeing.
When I say we picked up the pace, I understand it could be thought that we work really hard and for a long time, but we don't its only very maximum an hour, more often than that just 30mins.
My trainer (the one who I've now disagreed with) says I need to use my legs more. He's the kind of rider with strong iron legs, and when he's tried Petra, she will only tolerate him for so long and then she does the freezing and then shooting off. She's honestly not any where near as bad with me, but then I have a weaker set of legs.
Sorry. Back to answer your other questions, she's just turned 9yrs old. Our back man is a specialist in massage therapy. He specialises in Mctimoney? Think I've spelt it right. He's at our yard once a week, so he did the full works with Petra.
Its just so frustrating as she's a fabulous mare, and I have such fun with her, but now I've started asking a little more from her this strange behaviour has appeared.
I forgot to mention, she has done it once on a hack too. We were with two other horses and we were passing a field of ponies. My reins were loose (possibly a bit washing line like) and she froze. I thought she had seen something she didnt like, but the other two continued walking along. I put my leg on and she shot forward and sideways.
We were all completely baffled. After probably about 30 seconds she just continued as normal. I'm baffled.