She has never learned to use her ring of muscles and doing that will be difficult for her because she is built forehand heavy and down hill. He ewe neck is conformation but it could be improved if she learned how to use her ring of muscles. She has NO development of her scalenus or crest. None. Right now her neck is "upsdie down" from raising her head and hollowing her back. Is she ridden in speed events with a tie down?
To start this she needs a couple of months of working on trotting up hills on a long reign.. rider in a 2 point. No jumping, No speed stuff.. just trotting up hills. Add to this teaching her to trot over 8 poles on the ground gradually raising them to 12 inches off the ground.. again trotting her over them with a loose rein and rider in a two point.
She cannot possibly get off her forehand without first building her abdominal muscles so she can lengthen her back and get her hind legs under her.
Here is something for you to read. http://www.equinestudies.org/ring_re...s_2008_pdf.pdf