As I’m sure you know, there is a difference between witnesses and evidence.
The post of yours that I quoted called for witnesses.
I guess (spelling it out) that one has no more witnesses to one-on-one interactions with any of the other folks that I brought up than you would in any other situation, but it is still believed (fairly) that they were involved in them.
And I’d suggest you believe it, too. Even without other witnesses.
Her son; hotel staff, airline staff, restaurant staff, or other incidental third parties: 13 years of a relationship like she described doesn’t occur in a vacuum. Someone would have seen something to corroborate her story.
No proof; no witnesses.
An alleged 13 year lesbian affair concurrent with her self alleged 13 year hetero affair with Cain.
Keep chasing; you may catch your tail yet.