Yes. I didn't say anything about it because I didn't want to be spoilery but that's exactly what I was thinking. It would be a TOTALLY different story line with Ty vs. the character from the book. There really wouldn't be any good storytelling reasons for it beyond the shock value so I hope they wouldn't go that route.
Partly it was the girl, Trisha and how she said her mom made her get checked out because she heard God in a sonata. If that requires a check up I would think hallucinations would as well.