Whilst she is also a hate figure, I do have a little sympathy for Maxine Carr, it's entirely possible that he gaslighted her into thinking he didn't do it. Manipulative people can make you think up is down and down is up. She was clearly under his spell.
I know someone who's son is inside for murder, but in their eyes "he didn't do it, he was framed by someone else" it's hard to believe that your loved one could be a monster.