User blog comment:Angren Túrë/How do you react?/@comment-13499046-20130916201908/@comment-14843841-20130917011250

I'm betting on the throry that Summer Rose and Ruby's dad divorced soon after Ruby was born because Summer planned to go back to being a Huntress after recovering. Maybe they were both hunters but the fater wanted to retire to give Ruby all the attention she needed.

So, the guy marries again, with Yang's mom, and Ruby and Yang are raised together as sisters. A few years later Summer shows up wanting to be part of Ruby's life too. Parents fight, some drama, but in the end Summer becomes more present in Ruby's life. I'm basing this theory in this part of Red like Roses Part. II's lyrics: "How could you leave me when you swore that you would stay". Sommer would ahve promiced Ruby she was here to stay and they would be together like monther and daughter.

A shor time later, after Ruby bonds with her biological mother, Summer is killed in action. This hits Ruby really hard. She sings up at signal so she can kill the same monsters that killed her mom. Qrow, her mother's brother, takes the role of her mentor and teaches ruby the ways of the Scythe.