Paladox sent me this story and I’m sharing it with you :

Still feeling guilty over Barbara’s death, Nancy searches for a way to go back to the Upside Down.
She feels like she can find some closure if she returns there. She runs into a demogorgon while
exploriing and decides to bribe it with a little sex, and it works! Actually she enjoys it so
much that she decides to keep this new entrance to the Upside Down a secret, and keeps going
back for more. Steve and Jonathan might get a little jealous, but that’s just too bad!