Lauren Making Dumb Decisions

The fact that Lauren is giving weirdo guy who has had a string of his girlfriends end up dead and unlocked her phone (without her knowledge )so he can text her is wild. This probably would be the perfect book to react to.
The team she is apart of seems kind of secret soceity/cult-ish.

Questions: Is there two people texting on phone or one posing as two? What happened in the past?