Actually, her family does not say that. A much older aunt (in her 50s, as opposed to KB's age of 29) who did not live in the same city as KB is the only "family" saying that. JDG (the aunt) lives and works in Pasco, WA. KB was from the Warden, WA area and - for the past two years - had been in Colorado with no personal interaction with her family (this is presumed because no one has uttered a single statement about actually seeing her or being around her since she moved to Colorado). If the online meet was true, wouldn't it have been repeated or confirmed by at least one immediate family member or someone claiming to be a close friend?
Maybe I am reading what you wrote in the wrong way. But if you are saying that K has had no personal interaction with her family in two years that is not true because there is zero information to support it. Just because family aren't talking doesn't mean there is no interaction. The family and friends don't need to confirm anything, and they have clearly said they are not talking to preserve the integrity of the investigation. Maybe i misread what you wrote if so apologies