So how about the following advice for Jo: try really hard to forget about "rationality", perhaps go see a hypnotist to get rid of your doubts about Christianity.

If it were really so, just how rational would rationality be?

As Eliezer has pointed out at least once before -- shouldn't the ideal rationalist be the one sitting on the giant heap of utility?

If X isn't true to your best estimate, it's got to be more ideal to recognize that and start figuring out how to deal with that, than to simply ignore that. Ignoring things doesn't make them go away.

Whatever happens, she ought to come to a place where she believes what she believes, because it's her best attempt to discover the truth.