Naturally!

After every evil thing you've done, it's as good a time as any to make things right again. So you follow Tatiana, beginning to wonder where it was she was going. Maybe she was on her way back to Beth's acquired mansion. "Listen, about what you said about Lucifer hexing me..." You explained how you met him, the potion that you drank, and most importantly, the deal that you made.

"So, if you're not completely satisfied, then the deal is broken..." she pondered.

"That's what he told me. And now look at what I've done!" All that week, he's fucked at least 4 women, darkened their souls and he even let Beth, of all people, get in his mind to control him. "I even called Beth 'Mistress'!" You shuddered, feeling like you wanted to scrub your tongue with three bars of soap, or a cheese grater!

"It's alright," Tat reassured. "You made mistakes, and thankfully, I got to you before your Beth could eradicate your spirit entirely. So now, you can clean the mess you started." On your way back to the mansion, you talked, or actually argued, about what plan they should take. Tatiana wished to slay the budding demonesses before they can control Earth, but you weren't prepared to lose your love, her friend, or the people you got involved. "I'm truly sorry for your loss, but we need to think about the rest of the world now."

"No!" you yelled. "You can't kill them! Maybe we can fix them, make their good sides come back. Like you did for me." There had to be a better way to get rid of this evil infecting the innocent without murdering. Beth and Anne had done enough of that. So, you decided to go back to haunted house. Once there, you can figure on whether to contact the Devil again or figure on how to reverse the damage you made.

Seeing it again came with a feeling of remorse for ever agreeing to anything by that creep, and as you briefly walk up the front stairs to the door, a renewed intention also. You look through the house, inspecting Lucifer's throne. You could just wait for him to come back, and that may be too long for Beth to finish her plans. On the other hand, you could try the library. There must be a book on the history on that no-longer seemingly-insane cult.