CountessKate and Ada seem to be right on from what I have studied and learned, as well. Part of the problem Vicky had in being torpedoed in raising Willy was her age; she was just a teenager when she gave birth to him, and in spite of her upbringing, education, and training, I suspect she (and Fritz) had little idea that the forces lurking in the background were as strong and devious as they were. By the time willy had develope his personality and ideas about the world, it was too late to effectively alter the course of that rushing river, so to speak.
And yes, Willy did try to be more of a 'good son' in the last years of Vicky's life. Which makes him and all of the popular biases about him come into question, in part, in my opinion. I think he was reaching out and probably knew himself it was all too little too late. he did the same thing with QV; and his vigil at her deathbed reflects his desire to make up for lost time. Too bad he didn't replay that scene when Vicky died a few months later.