Here is some evidence that KAK was suposed to meet Libby on the bridge the day of the murder, from the below linked article:
"Later in the transcript,
police question Kline about plans to meet Libby on the Monon High Bridge.
“See I don’t remember ever saying to meet up with me though,” Kline said.
However, the officer questioning Kline referred to a message the defendant allegedly wrote to someone after he learned the girls had been murdered. On the fake account, "anthony_shots" writes,
“Yeah, we were supposed to meet but she never showed up.”
According to a police transcript, a fake social media profile interacted with murdered Delphi teen the night before she and a friend disappeared.
www.jconline.com