[malandrew]

I don't know if it is necessarily sexism or delivery or timing. I'm a man, 6'5", 250lbs, and I work as a software engineer. That being said, I've experienced this exact scenario many many times:

    "I've lost the count of how many times she told me about 
    how she explained something to the team, with everyone 
    bashing her, and after a few weeks, someone else (a guy) 
    explaining the same thing and everyone praising the guy."

The moment she starts blaming it on sexism, is the moment she starts examining whether or not she can change something about how she delivers her ideas.

Getting an idea accepted is also as much about delivery as it is about timing. The reason I point this out is because at work I generally am a lot better at having a longer view strategy wise than most of my colleagues and this is something I find that women are also good at (and also the reason why people compare Warren Buffett's investing strategy to that typically employed by women). If you are too early with an idea and people are ready for it, then you should come to terms with the fact that you may need to present it many times over until people either come around to the idea or the timing is eventually right to present it.

She needs to stop feeling like a victim and start thinking about persuasion and why her ideas are failing to gain acceptance. It's not her gender but may be related to her gender with respect to delivery. Change the delivery deliberately.