I_Write_Ivre
1upMushroomCloud
Remember, if you have a strong female character, any feminine qualities or traits in her should be portrayed to be weaknesses and make her more vulnerable. It's impossible for femininity to be empowering to a strong, tough female. It only makes women submissive and girly.
make sure all her problmes relate to her being female. She needs BREAST cancer (men can't get that) and the villain she fights is sexist (women can't be sexist and men don't fight sexists) and only she has relationship issues (because only women care about romance).
A woman will always try to make a deal with the badguy if she feels she can save the life of the masculine man who saver her life. She'll say it's that she "has a debt", but we know its because she secretly harbors feelings for him. This IN NO WAY can be used as a set up or a trick or a ploy, that'd be stupid.
((This, and the original post I made, are why I LOVED Black Widow from the new Avengers movie. She's in control of herself but still managed to have a moment where she seemed emotional and even a touch feminine without it being a vulnerability and destroying her strength and effectiveness as a character))