As for glass ceiling metaphor, why don't you ask Sandberg what she's referring to. I was just referencing what she said "She opposes all forms of affirmative action for women. “If you don’t believe there is a glass ceiling, there is no need,” she told me."
Oh and as for specifics about being propped up and sponsored by men I'd point to things like this "In January of 1991, Summers became the chief economist at the World Bank, and that spring he recruited Sandberg as a research assistant." I don't care how smart or good you are, without certain connections you're not going to get a research associateship at the world bank.