She’s being emotionally abusive and manipulative. Don’t play into this. Assure her you definitely WILL make mistakes and it takes a lifetime to learn everything there is to know about another person. I’m sure she doesn’t know everything there is to know about you and she doesn’t even think that matters. The only thing that matters to her is that you worship her and make her your only reason to exist. I have been married 18 years and we are still learning each other.