Father Sebastian was too frustrated. He didn't like the fact that Father Jacob and Father Paulson simply solved the Missing case in two days. He didn't know that Veronica was involved in it. He thought it was Father Jacob's doing. He showed that anger and frustration on Jacob's sister Julie. Julie had no other choice because if she did anything against father Sebastian he would upload her video to the internet.
Once Julie's mother became so angry with her for being a misbehaving girl. She scolded her and told her to go to the church and confess. Julie came to the church but that time Father Jacob was not there. Father Sebastian was the one who saw her. He took her to his room and gave her something to drink. Before he gave it to her, he mixed some medicine in it. It made her so horney and uncontrollable.