Alastor and Charlie made a deal and Charlie was pissed at Alastor for no reason at all..

Charlie: all you do is smile and watch us struggle and fail...

Alastor: a smile is a powerful tool my dear

Charlie: What's that you say about smiles?

Alastor: good girl... Let's make a deal?

Charlie: You want my soul...? She says as she backs up

Alastor: your soul~