Charlie went inside a room, seeing Alastor and another demon making a deal

Charlie: "Alastor? What are you doing? "

Alastor: "I'm just making a deal, Charlie"

Charlie: "A deal for what?"

Alastor: "Well.. his soul"

Alastor showee the paper of the deal

Charlie: "What?! Why you would do that?!"

Charlie grabbed the paper

Alastor tried to stop her but during the struggle with Alastor, Charlie pressed the accept button, now she was the owner of your soul

Charlie: "...Sh-t..."