I just watched the additional clips that were shown on CBS the morning after the interview aired. Megan sat through the majority of that interview dragging the Royal family through the mud then when asked by Oprah about the situation with her father she says "I'm not sure that I'm comfortable talking about that."
Also, in the main interview Oprah claimed that they had no idea what questions she was going to ask them. Then on CBS the following morning she states that she had spoken to the couple to see what they wanted to get from the interview, what points they wanted addressed to make sure that they would come away from the interview satisfied with the outcome. So that being said I find it interesting that one of the main points focused on was the interaction with Catherine. This to me shows that Megan definitely holds a grudge and show real envy towards Catherine.
I agree with a previous post, I can't understand what is their end game? Where did they think this interview would take them. Just go, lead your private life stop trying to play the victim card from your multi million dollar mansion, leave the dedicated members of the Royal family alone to continue with their duties.