If I wanted to increase speed, I would work on fewer weave poles at first, 2, then 4, then 6. I would probably review weaving using the 2X2 method. I would also promote drive coming out of the weave poles at the end by throwing a toy straight away from the end. If I were going to use a treat, I would at least throw it straight away from the end to get her to go after it quicker. I think that's a better placement of reward.
Her weaves looked nice to me. Not necessarily blazing, but nice and steady and quick.