Oooookay now it's revealed why following that advice was a really bad idea, because let's mention first the dinner incident where Jones was a bit judgemental towards Adrien when she just wanted to be nice, and now they're on their way to get closer with each other and allow others in, they give her the benefit of the doubt and their trust and she shoves that out the window the moment she rummages through their home.

The only thing that both Hilde and Adrien can conclude is that she was actively seeking to look for this stuff, with a child present.

Nosy bitch needs to gtfo