Considering the last time they talked, it had been in the commissary, it's kind of amusing that when Katniss encounters Zatanna again, it's by the buffet table. She's been eyeing the food for a while now, wanting to eat it and still not feeling trusting enough to actually create the overflowing plate that she really desires. She is eating again - extremely small quantities of soylent - but for the most part, water still seems like the safest choice.

And given her last (and only) experience with alcohol had been so negative, she doesn't make any move towards the drinks. That's fine; food temptation is bad enough.

When she notices Zatanna standing next to her, Katniss offers a small smile in greeting. She remembers how bubbly the girl had been the last time they had met and given that, she opts to leave it up to the other girl to start a conversation. It seems a lot easier than starting with a lame 'hi' again.