Poor Katniss. She just wanted to eat her dinner and watch a little TV, and then... well, this first clip from The Hunger Games: Mockingjay Part 1 happens. Sure, it's kind of good news and bad news at the same time, but either way it's definitely not going to help her digestion.
As hinted at in the trailer, this is when Katniss suddenly realizes Peeta also survived the Quarter Quell, but is now — either willingly or unwillingly — a pawn of the Capitol. Katniss, I hate to break it you, but this moment is about as happy as you're going to get in either of the Mockingjay movies, so enjoy it while you can.