She can be strong in her own way like memboriseing spells to cast on people and (well i wont metion anymore)
I guess sometimes harry comes to the rescue but not that much

She stuck with Harry through thick and thin.

She is strong,she is like a woman should be,she doesn't just go and call Ron to help for everything..she can handle things on her own.,and if not and they do help her,it's because they're friends and she helps them in need as well.

Definitely!

When she erased the memories of her from her parents and sent them to Australia to prevent them from being tortured for information about her whereabouts.

One of the strongest characters in the books, emotionally-speaking. :)

very strong character and personality

Being one of the main three characters, it makes sense she is a stong one, well developed and constructed.

She stuck with Harry when Ron left, she erased her parents' memory, she faced death thousands of times and defeated threats with simple help, and in HBP she even wanted revenge on Ron for dating Lavender out of the blue.

Very strong she stayed from year 1 all the way through never asked questions amazingly loyal.

SHE IS A HERO

That's only logical... :)