User blog comment:Zathronas/Analysis by an Author: Summer Rose & Red Like Roses p2 Album/@comment-15145664-20131225063747/@comment-15145664-20131225064151

Also, there is a possibility that the Red Trailer, and by addition the death of Summer Rose, comes some time after the present time.

Ruby would be innocent and happy, but become depressed and angry later. It just seems to me that as much of a surrogate mother Yang tries to be, the amount of hurt Ruby feels towards the death of Summer is too much for Yang to completely counteract.