Business Networking is sometimes a little different for women then men. Time, gender-bias, and other women to support and mentor makes business networking less common for the business woman. Not to mention that the "good ol' boys club" does still exist, (although it has lessened a bit).
Luckily, women are now generally given the respect and opportunities they deserve - generally...
There are and will always be exceptions, and as a woman, we will always have to deal with the other obligations and responsibilities. These obligations and responsibilities add to our lives and often hold us back --or delay us from business success - but they don't have to.
Time, due to family responsibilities, and the other aspects of a woman's life - such as pregnancy will always be a challenge. But it is also a great gift.
Business Networking for women is only different because women are different then men - not better or worse. There are groups specifically for women, executive women's groups, women business owner's groups, mom's groups. AND - we still get to play on the golf leagues, go to networking groups, seminars, breakfasts, etc. We just need to find groups that meet when we can meet, or online communities that never close, to accomodate our lifestyles.