User blog comment:Lawrence.solomon.5/Cinder Fall = Fallen Summer rose Theory/@comment-3146930-20140907133929/@comment-3146930-20140908155754

She could have been very angry and vengeful at the time, but has put on a fake smile all her life so that her father wouldn't worry. Yang mentions after Summer's death, their father shut down (at least for a time, as he seems ok now based on certain phrases in the show), so Ruby could have out on a smile to make them happy. She does seem very happy in the show, but she is also very bad at socializing and even at one point mentions meeting new weapons as better than meeting new people. In a way, she sees weapons as the more preferred companion, sort of like how some people like their dogs over their friends.