Okay I just realized this in math. So we all know she picks Peeta. I think one of the reasons she picked him is that Gale was always there to protect her family. He helped her hunt and trade. Ya he cared for katniss but not as much a Peeta. Peeta was always there to protect Katniss. He was the first person that she really had to protect HER since she lost her dad. Peeta never had any other motives but her.