Gwen: why isn't it working?
She's dead why am i not free? Wasn't i supposed to be free if i Killed Jen!?
Was it all pointless?
All that fighting..for nothing?
So this is kinda a what if thing, if Gwen actually had defeated Jen she would still be trapped in the bloody realm and then would disappear because she was somewhat a part of Jen.
The virus has done it's job but will die alongside it's prey.