PBA -“I don’t think it is relevant to lashon hara whether what the person did is actually wrong, unless the action takes the person out of klal amisecha, which I don’t think is relevant here.”
Exactly. So go and look it up. If you’re too lazy -the CC says if a person does an Aveira B’meizid more than once -you can speak LH on him/her. And this is the case of the OP by her own admission!