I think she's thinking that. A sarcastic "Yeah, sure."
I did this today, enjoy for the first time ever something fresh from the oven!
And she... She's probably...
the crazy teenager sister of some poor playful kid.
For her, playful means annoying.
Or the babysitter.
Or not. Maybe she's not that...
And her sarcastic "yeah" is actually for an annoying guy her age.
Maybe you know :)