Is she hooked up with the "Church of Scientology" or with a splinter group? Does the group have a name? Are they actually doing dianetic auditing or is the Dianetics book something she has in addition to an interest in other groups who do "emotional clearing" - Groups who are not so closely aligned with scientology/dianetics ideas? Has she explained how it "works", what she actually does and what is the end result she is aiming for? If she tells you answers to some of those questions it might be easier find out how involved she is. The fact that she wants to take you to some sort of orientation doesn't sound too good. If you did decide to go, to try to suss things out, you would get "sugar and spice and all things nice" because that's what cult traps are made of......at the beginning.