Good summary. However at the end, she decides it's not because she lost interest, but rather because "the system" doesn't make allowances for women in science who want to pursue other interests.
As opposed to the allowances it makes for men who want to pursue other interests? She was insecure, lazy, and unambitious. I think those were much larger factors than the mysterious lack of opportunities in science for women to do pursue things other than science.
it's all about originality, which she clearly lacked.