She remained so calm during the time this was brought out in court, my money is on, she already knew it.
I don't think she knew. She appears to just be one of those people that hides her feelings. It is humiliating to discover that the person you love has cheatd on you. I haven't experienced that feeling in well over 35 years, but I remember it to this day.
I also remember that I acted as if it was no big deal when, in fact, I was devastated.
I could totally keep my cool when finding out my husband (or fiance' as it was for me) cheated.
However, I could not keep my cool when hearing the details of my child's death. Thank god, I never lost a child but I have lost too many beloved pets (not saying it is the same, I am only using my personal point of reference) and I fall apart just thinking about it.
IMO, it's is two very different emotions and too very different wells they spring from. At least for me it is, so I can accept the possiblity that she did not know about that.
Her reactions at the funeral and at the hearing when listening to details about her son's death are a totally different kettle of fish though. IMO