Zatanna's head is all kinds of fuzzy and admittedly buzzing with the discussion with Alcide.  There's definitely a way to get their abilities back, she just hasn't figured it out yet.  She'll get there.  

She notices Katniss belatedly and catches the smile, quickly returning it.  It's good to see her and, Zee can't help noticing, at the buffet for that matter.  Considering the last time they talked, seeing her near the food makes Zatanna weirdly happy.  She doesn't even really know this girl.

"Hey, you're eating again!" she chirps happily.  The words are followed immediately by a little hiccup.  Seriously, she needs to slow down on the fruity cocktail beverages.