It'll take a very good mechanics coach and probably a track coach to help her relearn how to move.
When running at less than a full run she has no knee lift and she moving laterally she hops.
Over the years I have concentrated on these two things in teaching the mechanics of movement.
My HS track coach called it "No wasted motion" mechanics
He taught:
When running you focus on stationary things in the distance,,if they are bouncing, so are you!
When moving laterally (slides)..your shoulders should be like they're on a conveyor, no up and down movement!
There is much more to what he taught our runners...way too much to go into here