noun / verb
trot
TROT/trɑːt/
A steady running pace faster than a walk.
The horse trots with alternating diagonal pairs of legs.

Etymology
Old French troter already meant to trot or go. In English, the verb originally described a horse's quick, steady gait, which supplies the model for the pace between walking and running.
In context
So, if she's just walking faster, but doesn't trot, doesn't trot. So, if she just speeds up a bit at the walk like that