Very nice CS. 
I would only suggest adding to some move pools.

Drexel: To go with the nimble/agile nature, Quick Attack, Agility, Double Team, and even Extremespeed. Also, I understand she's more water, but Ice Shard would be a good move as well as Aqua Jet. 
Also, is "Wave" an original move? I don't need to know details, I was just curious. But going along with that, you could make a move that compliments a Vaporeon's ability to make itself look like water and become invisible. 

Zoe: I think adding Quick Attack, Agility, and even Double Team would work well for her. 

Also, you can give them any other Ability you think would work for their personality/fighting style/type/etc. You're not constricted to game canon. But there are restrictions on said personality/fighting style/type/etc.

But feel free to post this in the CS tab. Again, very nice CS. :D