Issues related to Rossini's journalistic integrity really have nothing to do with Vrabel as coach
Heck if anything, he may have been getting inside info from her about other teams - which only helps the Pats (and potentially hinders other teams.)
I suppose Kraft could question whether she got intel from Vrabel but all coaches have sources that they rely on (including reporters) and similarly leak information and disinformation to them.
From a football perspective, I view their relationship as a side story - though I understand why the Athletic and NYT don't feel the same way. It puts Rossini in a tough place when it comes to her other NFL sources and they know it.
Aside from that, having been through my own trials and tribulations in a flawed marriage, I reserve all judgment between two consenting adults. Whether Belichick, Vrabel or any other past or assistant coaches have had affairs is just none of my business or anyone else's. Their private lives should remain private and best wishes to any of them in finding happiness in their personal relationships.