The Scorch Trials: Reading Skills

In The Scorch Trials, I am getting close to the end of my book and I was wondering some things as it got to the end. One question was Teresa and someone else named Aris were trying to kill Thomas all along as it got to the end but why? Was Teresa with the wicked group all along? And how long was wicked planning to try and knock out Thomas? Possibly when, why, or how did Teresa turn on Thomas? Even though I'm on the last chapter, i might predict that in the next book, maybe Teresa isn't going to be in it at all. I honestly don't know. A text-to-text connection is actually the first book of the series, where the old members of the gladers had turned against Thomas for their own good. A text-to-world connection could possibly be country rivalries like the United States and Afghanistan because it causes conflict between two people/ groups of people. And a text-to-self connection might be your sports team against the other team because both of you are competing against a common goal. Even though this connection also is about the fun of playing the sport, they're always is some competition.