She went out on her on terms. Sure it was not a good decision to join Rosita. She got caught and was nearly used as a tool against her family. But she did not allow that to happen. She put a stop to it. Sasha gave our group the opening they needed to escape certain death for all of them. She even killed one of the sons of bitches. Damn near taking a bite out of Negan. Most of all, she prevented Negan from using her to hurt her people and gain an even bigger advantage. Well done Sasha. You did your part in the war.