Sorry... another thought.
Maybe DNV did not discuss her private life with EX mother in law, JDT for fear it might be used against her at some time. And that might be why somethings are being changed… Because it’s not things she knows for a fact it’s things that she has been told by other people or just thought might be the answers.
And.... do we know what number JDT was called from? was it in fact the password locked cell phone of DNV or did he call her on his own phone ? Where he could have been given the number by RC? Or he could have called her through the Facebook messenger app on his phone if she had that feature set up... again that matters a lot. Or maybe her password was given to him to unlock the phone by the same friend that gave it to JDT or another friend that knew it. If RC did suggest JDT‘s name as a person he thought DW should call because they were concerned but wasn’t quite sure, would explain why he called and stated finding “this girl’s“ cell phone because he wasn’t sure of their relationship connection or simply that he really know her well at all except from being a friend of a friend or being a past customer until that night. Maybe they friended each other that night on FB.
Maybe JDT was not alarmed at first and assumed DNV went out celebrating/partying and had too many and lost her phone and now some strange guy was calling her about it. So she was like whatever just take it to her job not my problem, Then just filled TT on what happened. He then he called DNVs phone to find out exactly what went on or if she had resurfaced and DW answered in case it was DNV calling from a friends phone. To me something like this makes more sense rather than DW pretending like he didn’t know DNV, when he seems smart enough to know there would be way too many witnesses saying he was with her that night.
Maybe the lack of interaction between The people that were out with her that night and the D/T family is due to the response they received afterwards or because they know DNVs relationship with her ex & family wasn’t all sunshine and rainbows and prefer to discuss what they know with LE...
Just another thought... not stating any of this as a fact.