I kinda have a feeling.. Just a feeling that Shiori doesn't wanted to eat Hinako but rather be with her and I kinda feel that she can't eat her because she loves her and instead.. Just a feeling she will die instead and Hinako's wish to be with her family will happen.. I don't really know for sure just my opinion tho..
I thought that at some point Aqua will be reincarnated again and have a happy ending, it's sad that after everything he still didn't get a happy ending tho I am happy that despite what happened Ruby is still fighting and moving forward T_T.