I saw it today for a second time. It was more of a drag than on first viewing, obviously, but I would say I found it more enjoyable overall because all the different plots were easier to follow this time around.
People are looking way too deeply into this. Simple answer: It’s Minerva’s mother, or aunt, or whatever. I refuse to believe JK and the rest of the writers and filmmakers have made such a huge misstep. Never, ever.
Oh God. Apparently mathematics is not J. K. Rowling's strongest suit.