[bonclaysama]

Martha (left in the first photo) found out that her older sister Caitlyn (right in the first photo) was flirting with her bf, and that's something that she couldn't allow, so she gathered her sister in her bedroom and challenge her to an all-out catfight until one of them quit. The stakes were clear, if Caitlyn loses, she couldn't talk again with Martha's bf. If Martha loses, Caitlyn can do whatever she wants with him.

Who win? and how?