I'm not sure what point you are trying to get across. I may be interpreting your thoughts wrong, but it seems to me that you are saying that she should not tell her kids that Daddy left Mom for OW. I have to disagree, I believe Donna and is doing the right thing. She does not want her children to believe that it is okay to have a GF/BF while married to another. She is instilling morals in them, not trying to beat her husband down.
This is an excerpt from an article that I just read on infidelity. It was talking about values and infidelity.
"The article also points to a person's role models -- usually their parents -- as an influence. If the parents cheated or seemed to accept infidelity, the lesson their child learned might be that it's not that big a deal. And that could carry over to the child's adult life."
In my H's case, not only did his father cheat, but also his maternal grandfather and paternal grandfather. Could this have had any bearing on my H's infidelity? I'm not sure, but I don't want my children thinking infidelity is acceptable.
OT, I know that there are differing viewpoints on whether the children should be told about the infidelity. I believe they should be told age appropriate things about why their parent left.
Yoyo
Life's challenges are not supposed to paralyze you, they're supposed to help you discover who you are. -- Bernice Johnson Reagon