Your mare has a start,her speed & levelness is pretty close. She is lacking in the HUS movement.She needs to drive more from behind & get that lift/extension in her stride.She may never get that movement but you can improve on what is there.
I have my APHA mare in training now & she doesn't really look like your HUS horse she looks like more a WP horse. When you watch her move though she moves like a big horse,I see HUS
She just has that loft in her stride
Needless to say her first show in which she will be ridden under saddle is coming up.HUS will be her class for sure,we'll see how she is coming in WP probably not be ready for that yet.