Strange experience with a client today

So this is definitely a first for me. I've been practicing for 11 years and I had a client come in today and it was her first time with me but it was also her last massage as she had canceled her membership and was using her final package. we spent the entire session talking about life and she really enjoyed her service and was even reconsidering canceling her membership. Like the last minute of the massage i'm wrapping up with her feet and she suddenly pulls her legs away and screams. I assume she got a sudden cramp or something but then she starts swatting at her shoulder. I said what is there a bug or something? And she gets up and says I'm done I'm done and I ask her if everything is OK and she said she felt something grab her shoulder. She starts rebuking whatever it is in the name of Jesus and saying a prayer and wouldn't let me leave the room until she was fully dressed because she was so freaked out. I told her I would sage the room and she said no no that won't do anything you need prayer which isn't really something I subscribe to. I didn't feel any sort of negative energy in the room so I feel like she brought in with her. I felt no cold spots or negative energy and neither did my coworkers. She said she had a bad feeling about this place. she was white as a sheet and she pretty much ran out the door after she checked out. I feel like there was a logical physical explanation to it but she was so sure that it was some sort of evil force. Definitely a very interesting experience.