The court docs noted that having received correspondence from TK in custody, RT did not believe he was remorseful for the attack on the girl in AZ. She felt his only concern was getting out of custody and having his things, including his knife and gun, shipped to SC. If the bio dad had knowledge of how TK had wanted to kill him, he may have been reluctant to give TK the arsenal he was accustomed to at the dad's home. Just speculating. I'm sure he was able to get his hands on whatever he needed in SC, though.