Rachel
She doesn't really have a plan, she just has done this kind of thing before. But she has a few advantages that a pure human didn't now. For one, she has better night vision and senses in general- they probably wouldn't see her. Second she is faster and stronger. So sneaks up on keeping low to the ground and if they hear anything she will go
"Nido, Nidoran"
In perfect imitation of their cry to allay suspicion then when she is close enough she will suddenly spring forward at a run to try and Pound the closest to knock him out with a stronger blow than she normally had then the throw Poison Sting spikes from her hand at the second to try and take them both out as fast as possible, figuring that most poison types had nonlethal poison if pokemon trainers use things like toxic in official league battles.