No, the article does not state that "she was not extradited". The accompanying video does, however, specifically state that she was.
The "knuckleheads" to whom you insultingly refer used the term "extradition" after it was used by the Thai and other authorities and reported as such, as does the news video in your link also. It has also been confirmed here that, initially, there was an extradition request.
This is a quote from your link also...
"I greatly appreciate the assistance of the Thailand authorities and our federal partners who worked tirelessly to bring this woman back and to hold her accountable," Oakland County Sheriff Michael Bouchard said.
That confirmed co-operation of the FBI and the RTP to get her back to the US also suggests extradition, of sorts, i.e. without that co-operation she may still be in Thailand, "unextradited".
So the use of the word "extradition" by posters was not unreasonable and you may want to consider removing the unreasonable "knucklehead" insult from your gloating OP.