[That really is a big difference, she has to wonder just how much like Tim this kid is, because so much of who her Tim was, had to do with how his parents raised him.
She knows how much of an effect that can have. She knows she wouldn't be the same person if Arthur wasn't Arthur.
no subject
She knows how much of an effect that can have. She knows she wouldn't be the same person if Arthur wasn't Arthur.
But she doesn't focus on that, instead, gently:]
You're using past tense.