I just had another great ride with Missy - it was our fifth ride. We started with some in-hand relaxation and softening work, including some concentrated work on soft backing - this was hard, but every time we did it she improved.
We worked some more on our standing for mounting - it's almost 100% where I want it to be. After I got on, we just stood there for a while on a loose rein while I praised her.
We did some very nice walk work, with soft stretching down, and some beginning to work on lengthening/shortening work off my seat and energy level, getting a nice, energetic, soft walk. Her halt is already significantly better - I think halt, exhale and place the feet for a square halt and she's right on it. We did some just standing around on a loose rein watching everything that was going on.
And we did some softening and backing under saddle - again, this was hard at first but by the end of our short work session she was already getting much better at it. This also will likely be completely right within a couple more work sessions.
Missy got lots of praise and strokes, and she seems to really appreciate that - well, she likes the treats she gets at the end of the ride, too! She is such a good-natured, level-headed, willing and intelligent mare that she's a delight to work with. She learns very quickly, and is willing to adopt new habits if I'm clear and consistent about what I want.