I think it’s a problem when your only tested method and example is a dead person and using demon magic, and then they also can’t naturally process the fact that they died.
Oh not denying it seems like a bad idea. Just saying of the listed problems all but one came from the fact she was dead. As for the last one no need to trick him into using his magic. Still far from ideal but the known problems are addressed.
Well to be fair, those problems wouldn’t aply to someone still alive.