Have you ever seen a horror movie where the female lead is tricked by a ghost into killing a living person and then taken away as a lunatic?

The plot of Global Death Day fits your description. I suggest you read this book. The plot is very strange and scary. The female protagonist and the others are involved in a game called "Global Death Day". The rules of the game are to avoid ghosts and the time limit is ten hours. In the end, the female protagonist found out that this was a scam, and she had killed many innocent people by mistake and was taken away as a lunatic. I hope you like this fairy's recommendation. Muah ~😗