I'm not responding to her actions; what's worse is that she's completely denying the whole thing, prioritizing her image and not owning up to whatever she might feel for Jared (assuming she actually does).

Instead, she is publicly pretending that this is some sort of misunderstanding or witchhunt that is solely happening to him (not her) and even anouncing her support for him. An innocent (or genuine) person would be outraged for being lead on, and ashamed that they didn't wait out for the divorce to actually occur. I mean don't you find it in the least objectionable that Holly and Heidi know each other?

I honestly don't see where Holly gets her moral higher ground from. Also, consider where Heidi got her information on the "promised break-up": of course both parties (Jared and Holly) would cover for each other, making this all the more infuriating for Heidi.