I'm not saying that females have to be tough as nails all the time. I'm not even sure if that is realistic when talking about any characters, whether they are male or female. However, there's a happy medium between Cruella de Vil and Snow White. I also don't think women find soft, weak characters a fair representation of who we are as a gender.
I think it's important that females are neck and neck with male characters. They should be confident, have self-esteem and be intelligent. They should be independent and empowered. Most of all, they shouldn't feel any guilt or shame for showing strength.
I recently watched a television show that portrays women as weak. I know that for this particular program, it makes sense and serves as more of a warning than an accurate portrayal, but it was hard to watch. It was somewhat infuriating. It's not something I could ever do as a writer. Then again, maybe this would be a good challenge for me.