Hello vpsean, welcome to the Astral Pulse! 
That your friend had a scary experience, doesn't mean that the next one will be also that way. If I was her I would wait a bit and then try again, and see how an OBE goes without the brainwave entrainment. Perhaps they are too intense for her.

That your friend had a scary experience, doesn't mean that the next one will be also that way. If I was her I would wait a bit and then try again, and see how an OBE goes without the brainwave entrainment. Perhaps they are too intense for her.