I think she was feeling something towards Peeta or the 'faking it' was still left behind. It's hard to say.

That's what I don't like, she didn't have a choice. Now she has to start a revolution and rescue Peeta and everyone else who didn't get saved. Katniss pretty much has to be a puppet for the last installment and rain hell down on the Capital which is awesome but...man some of the choices were poor ones but hey, the series itself is better than others so I can't complain much. Overall I still enjoy it as a whole while some fans pretend the third book never happened heh.