Ignore the shitty anatomy and boring flat colors on this, I just really wanted to illustrate one of MY personal Summer Rose theories

So hear me out, my idea for Summer is similar to Warwick/Vander in Season 2 of Arcane, where she's found as another Hound experiment or Grimm hybrid. But SOMEHOW she's conscious and has some humanity left, so she’s still able to reunite/live/interact with Ruby and Yang normally, just as a beast now. So just living a normal life again as a sentient half-Grimm the way Warwick/Vander did with HIS daughters for a short time.

This theory also would work carrying the themes of V9. Ruby after learning her themes of love and acceptance would still love her mother even if she was a Grimm hybrid, mirroring Summer’s words “I love you just the way you are” back to her

But don't take my word for it if you don't agree, like I said this is just a theory. Time will tell if canon proves me wrong or not