I don't believe it is a selfish reason at all to want to astral project. You don't need people telling you that or imposing religion on to you (not saying that it has happened). You do you! You're friend needs to be relaxed and void of any stress to project efficiently. It takes time. Practice. Sometimes years to successfully accomplish. She can even practice by not physically trying to project. Just by thinking of the process when she has a few minutes in her day. This is how I, and many athletes, train when we're not at the track, field, pool, arena etc. Your brain cannot tell the difference besides the physical sensation of touch sparked by nerve endings and neurons etc. It's all the same. You can inspire her to follow Jesus. There's nothing wrong with that. But what she needs is a scientifically proven method on how to project efficiently. Yes. it has been proven. I hope this was the answer you were looking for. For the record, I too, follow God.