She's wrong, she picked the sissy who didn't challenge her at all. Gale did, and he would have made her a better person. Peeta worshipped the ground she walked on, and she liked that better <---- wrong.
Okay I just realized this in math. So we all know she picks 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.