Terri Horman’s stepson, Kyron Horman, disappeared six years ago. The day Kyron vanished, Terri says she dropped him off at his Oregon elementary school and claims she watched him walk down the hall to his classroom. But Kyron did not come home on the bus and has never been seen again.

Although Terri has lived under a shadow of public suspicion the last six years, she has never been identified by law enforcement as a suspect in his disappearance and she is adamant that she did not harm her son. Terri says she loves Kyron like her own child and “suffers every day without him.”

In the video above, Dr. Phil reviews one of Terri’s social media posts four days after her stepson went missing. And, how does Terri, who was married to Kyron’s father at the time, explain exchanging sexually-graphic text messages with another man 26 days after Kyron vanished?

This episode of Dr. Phil airs Thursday. Watch more here.