I feel the very last point is crucial. Having worked with other women in manly driven companies I can tell it is really supportive to find other women willing to help by providing the hints and tips of how to succeed in this very particular company. I believe each organisation has its own way of behaving and finding peers to discuss and share experience is essential as much as it is helpful. We often underestimate the potential that is lost because women just don't know wham and how they can speak up. Helping to clarify this also helps positioning women skills and therefore personal strengths at the right place, which eventually benefits the company itself.