Has anyone heard who EJ's provider was/is? I am concerned that if she was subscribing to Cricket, a prominent AZ provider, that there might not be any phone records for LE to check. Cricket's service is basically "all you can call", every user gets unlimited minutes. When you get the bill, there's no itemized list, you just pay the same monthly fee every month. Of course, her phone might show her incoming/outgoing calls, but if she's a Cricket subscriber, I don't think LE will find any records for her phone.
Fwiw, here's Cricket's site:
http://www.mycricket.com/