My question involves criminal law for the state of: Texas

This story is all over the news right now. Its about a 14 yo student who collected nearly 30,000 dollars from his teacher, who he was having sex with, in exchange for him to keep from going to authorities about the issue. All of the media sources are labeling this extortion, but I believe differently. I believe it is witness tampering/bribing by the teacher, since she is paying the victim money to prevent him from going to police about a crime. Interestingly, neither the student has been charged with extortion, nor the teacher charged with witness tampering.

Any thoughts on this from someone knowledgeable with this area of law?

http://abc7chicago.com/news/teen-all...-with/1718585/