Can you tell where she might have been sore before?
My reins were loose because, well, that's how we warm up, trying to give her room to stretch out, however this week she's been a hot tamale about estrus and all that jazz (you can see her trying to look over at her mare-friends off camera, lol), so she promptly said NOPE and would much rather try to trot whenever I gave a jiggle on the rein. We're calming down the regime, emphasizing more trot and more cross rails as per suggestion from the chiropractor. The chiro adjusted her thoracic vertebrae and checked her hind legs; amazing flexibility and strength in the left hind but, as I'd seen already, stiff in the right. The cross rails will thankfully keep her happy with the presumed boredom of trotting long distance.
No excuse for my far-apart feet, heheh... I thought I was relaxing my leg and really trying not to close my knee too much, apparently my calf didn't close either and my toes stuck out Also, now that I see it on video, I think I should've gathered up my reins a bit and cued from there, for a warm up with that attitude she shouldn't have so much slack rein. I also see that my upper body comes forward sometimes; I follow her a little too much and start leaning where she's going instead of being more of a driver than a passenger.
*She can't do much stopping and backing currently.
**Admittedly I think I've done too much work on trying to get her to do downward transitions, she has a short temper for the bit and thinks it means work, so her head comes up and she tries to speed for a second before slowing. I can only imagine the way to fix that is to just keep practicing change of pace and holding the pressure on her until she gives, ignoring the speeding and gross giraffe neck for that moment.