>>89743726She was playing Teemo, Bard and Soraka jungle. It was fine because it was against bots, but none of these are meta or even decently good at the role, it's what you'd call meme picks (or trolling if you were actually playing ranked with that). She probably played jungle because she thought she "had" to due to being all newbies + Rissa (healslut (affectionate)).
If you were to judge her based on her jungling alone i'd say silver, but we still haven't seen what she looks like when she's actually laning and focusing on lasthitting, trading and such, so we can only guess. I'm going with anything from gold to platinum.