She speaks in absolutes nearly always. She also rewrites our marital history (which is very frustrating) and says that she never should've married me.
This is common. My W is doing the same thing. She has rewritten our entire history. She says she only married me because her life was terrible at the time I proposed, and she was depressed. She wasn't in love with me, but didn't want to lose me. Her whole life was awful. She then lists all the terrible things in her life from that time and says I was the only thing everyone around her thought she was doing right (note: she had no feelings for me, it's just the outside perception that was/is good about me).
This is all far from the truth, but she has taken bits and pieces of what happened and twisted them to justify her actions. You're right that it's frustrating, and at least my W can be very convincing. It had me questioning my own memories, but then I realized it was all BS. However, this is what she believes to be true, and that makes it reality to her. You cannot convince her otherwise. You can only show her your actions in the here and now, and hope the actual memories can shine through some how.
Married: 9, Together: 16 Me:33, W:34, D:6, S:3 BD: 1/1/18 EA confirmed: 2/7/18 I moved out 6/1/18