Ha ha you didn't use a mask! Vinnie's master plan was clearly working, if he were actually clever enough to make master plans like that. He's not. But that was some proper body language there. Good job.

"Well, I made you upset cuz I wanted t'eat you, right? And you need a trainin' partner who can't get poisoned too easy." Half poison type bros!

His big brotherly instincts were taking over any sort of appetite he had for her. Maybe it was because he could relate to that bottom-of-the-barrel feeling of wanting to get stronger - so he wanted to help.