He should try talking to Hughes-san.

"I don't know, but recruitment must be hushed, because I've never heard anything about it. I wonder how they choose who gets to join and who doesn't..."

She'd volunteer to be the mole, but she's already verbally assaulted two Team Rocket members. "But it'd probably be good to figure out more about the organization before we do anything."

Ouka's just a spoiled little girl. She's had no experience with anything remotely similar to this. So she's really just reacting based off of what she's seen on crime shows and mystery novels. But at least she gets points for trying.