It's absolutely fucked up and a failure, and I think that Dylan could reasonably feel very let down by her mother but has opted not to go there because she gets more out of having a parent who supports her than from turning against both, and Mia apparently is there for her now even if she wasn't fully there at the time.
Mia Farrow clearly fucked up, but the appeals court made a good point, which was that some of her behavior could be seen as incited by the things Woody Allen had done, but the same could not be said for him of her. If I had a partner I loved and who was accepted as eccentric and widely adored--and perhaps if I had some personal issues that made me easily manipulated or fleeced, and I was reeling from finding naked photos of my daughter taken by my partner and went off the rails, and it was not 2014 but a couple of decades earlier--maybe I would have made some poor decisions too. All I know is I frequently see that women are expected to be the moral police in families and take responsibility for men's transgressions in addition to their own.
We know from the court records that Mia had concerns about Woody's behavior, and evidently she believed it was emotional over-involvement and lack of judgment, and not full-on abuse. In other words, she didn't have the benefit of 20/20 hindsight, as Dylan had not yet made accusations, and there were no Soon-Yi photos, only misgivings that were no doubt going to be swatted away. We know that Woody Allen countered her concerns by saying she was too attached to Satchel / Ronan.
I have my own prejudice here. I know what it's like to be told that purple is green and be expected to believe it, and I know it's easier to put someone in that position if their own background weakens their self-protective mechanisms. I was in a messed-up scenario, married to a very controlling and possibly sociopathic man, and have had to work very hard to get stronger and trust my gut and stand my ground.
So anyway, yes, Mia Farrow didn't do all she could have to protect her kids, and she has to live with that. Public judgment says she was supposed to believe that Woody Allen was a child molester in advance of evidence, when even many members of the public do not believe it despite his now adult daughter saying he molested her. Interesting circular logic.
Bookmarks