Reuter was pregnant with the baby of former Chicago Bears player Shaun Gayle.
Some of the tapes were played during a pre-trial hearing. However, a judge ruled the video tapes were not allowed in Yang's trial.
The 43-year-old convicted murderer was questioned by police a few months after Rueter's murder. For several hours she was left alone in a room. Other times, Yang was cool and collected as she was clearly lying to investigators.
Three months after Yang murdered Rhoni Reuter and her unborn daughter, Yang was brought to the Lake County Sheriff's Division for questioning.
Brought into an interrogation room, Yang was read her Miranda rights before two investigators began a three-day interrogation. Sipping on coffee, Yang was calm and friendly as police asked her about Gayle, several of his girlfriends, and of course Rhoni Reuter.
"When was the first time you ever saw Rhoni or a picture?" investigators asked Yang. "After the incident, after she was killed," Yang said.
Prosecutors said Yang's motive for killing Reuter was a jealousy over the fact that Reuter was pregnant with Gayle's child.
Police asked Yang about her relationship with Reuter. "I never met her, never spoke to her," she said.
Although Yang did tell police she was aware Reuter was having an intimate relationship with Gayle, the questioning lasted on and off for three days.
On the tapes, Yang is seen sleeping on the floor at one point before she was released and arrested 14 months later for murder.
Yang was arrested after police secretly recorded conversations between Yang and a friend. In those tapes, Yang admitted to killing Reuter.
The three interrogation tapes also included Yang admitting to police she bought a book and the tools on how to construct a gun silencer. Yang told police she had bought the book as a gag gift for a friend who was a gun collector.