Later throughout the series, riots begin to happen and people are killed due to her acts of defiance, as well as President Snow being hesistant and threatening towards her. Her family is threatened, as well as Peeta.
it can be many reasons such as they could want they're family to live and explore more two. might just want to be nice.
3.some say for the greater good or future.
4. they might want to have they're baby,kid,family explore more. people just sacrifice.
someone is sacrificed everyday.