In all of the characters in the 'His Dark Materials' universe, no one is more alluring or more charismatic than Marisa Coulter. Her hair is sleek and blonde. It frames her face perfectly, giving her an almost cherubic appearance. She uses it to lull others, soothing children with her motherly charm, and seducing men into betraying themselves.
In order to get to the heart of this wicked woman, we must look at the words of the angel Metatron when he looks into her soul: 'Corruption and envy and lust for power. Cruelty and coldness. A vicious probing curiosity. Pure poisonous, toxic malice.' He goes on to say that she had never from her earliest years shown a shred of compassion or sympathy or kindness without calculating how it would return to her advantage.
She was a terrible person, and also a mother. Her redeeming quality was her desire to save Lyra, protect her, and make sure that she was saved from temptation. She may not have been a perfect woman. Lyra would often say that she wasn't safe with her, and maybe she was right. Marisa had a vicious streak, and she didn't seem to mind attacking with her gold monkey daemon.