Hey...she went from "Girl" to "Woman".
How many other female superheroes have done that?
She started out as the Invisible "Girl" and managed to make the name change to the Invisible "Woman".
Not that easy of a feat.
Look at Supergirl and Batgirl.
She is a superhero, the "mother" of the FF (and also second in command), a real mother to her own children, a "sister" to other superheroes (the Wasp, She-Hulk), a career woman and arguably one of the most power beings in the Marvel Universe. To qualify that last thing....Dr. Doom is wary of her and has said she was the most powerful member of the FF. When you can worry Victor Von Doom.....
Of course Sue can turn invisible. Not only herself, but also the area around her up to several miles. She can project forcefields that can withstand direct blows by Thor's hammer and the Hulk.
The "ugly things" she almost never does.... She could project a forcefield inside you (or armor) and quickly expand it causing you/it to explode. Sue can also encase your head in a forcefield and see how long you last without oxygen.
See? The Invisible Woman can mess you up.
So when people point out female role-models in comic books, don't forget the Invisible Woman.