Tess-
Make sure the dropzone is a member of the USPA. Also, have her tell her tandem instructor that she's planning on continuing to jump (even if she isn't, or doesn't know) because they will teach you a lot more about stuff, to the point where you can actually skip one of the levels of instruction (and save about $185.00) if she does continue. Even if she doesn't jump again, learning stuff and getting to fly the canopy yourself is lots of fun!