Board Thread:General Discussion/@comment-26273984-20150403165812/@comment-75.197.198.119-20150403183515

Agreed. I also put emphasis on "It's your blood that's red like roses", which almost directly implies that Summer died, likely in combat.

Unless, of course, it's just Ruby's mind making up reasons for why Summer never came back.

I've just always been under the impression that Yang's mom left, something happened, and never came back (but is still fully alive)- while Summer left and died on a mission.