Mae's home was covered with dozens of his paintings and drawings. I never even knew Henry Miller was a competent visual artist till I saw his work in Mae's house. Frankly, I think he should have pursued that muse instead of the one that made him famous. The guy could really draw. But that don't prove she's a murderer, at least not to my satisfaction.
Some people insist on speculating anyway.
I just don't know and, unlike some folks, I'm willing to say so. Mae herself believed she was given cancer by microwaves broadcast from the house across the street. When the house was first built Mae baked some cookies and went to meet her new neighbors. They didn't let her in. She could see past them the partially open door, though.