Ruby/Sam
It's not our business. I mean, Jo is a close friend and I think Chuck is okay. But I don't know if they'd appreciate us prying.
I don't think she would mind it if you did. She said that she was more than willing to talk to you about the details, so if you're really that uncomfortable with it maybe you should go ahead and discuss things. You know more about potions than I do, so it might be for the best anyway. I'll definitely do some reading.