I've purchased Mary Trump's book, and I've read some of it. I think it's going to be valuable to future historians and biographers, assuming that there are any, but it has little to offer the present day. There needs no ghost from the grave to tell us that Trump is a dangerous narcissist and a habitual liar. I'm hoping to live to see the day when we have the leisure to ask how he got that way. When he is finally history, Trump will be as entertaining to consider as he is harrowing now.
For now, I think I agree with Brawndo. This is not much of a story. Save it for a sunny day.