All GREAT points Ava. Except, Allison is the mother of the MC's mother, Anne. His father, and that whole side of the family (except now, obviously, Sophia) isn't part of the game.
I don't remember the exact dialogues, but, I got the impression that Allison wasn't that keen on MC's father. Ophelia also didn't seem very impressed with him. Since Sophia is the same age of Kat and Melissa, these donations to a Sperm Bank, feel a bit cheaty. Maybe he didn't cheat on Anne, by having sex with someone, but, making sperm donations feels like a close second. I may be wrong, but potentially (and effectively) impregnating women not your wife, is quite bad in my view. Maybe, Anne knew and agreed with it, maybeeeee.
I know that this is totally NOT what was your point, but, I think that finding out that her daughter Anne was sidestepped that way wouldn't make Allison that happy, and maybe that's why Ophelia kept the secret. Not to betray her friend, but to protect her and her daughter from a very painful discovery. At least, I imagine that most women wouldn't really enjoy that type of action from their husband and father of her kids.
This whole story has yet to be told, we are just speculating on a strongly hinted situation. But, it is fair to extrapolate.
Anyway Peace
