No, she sounds like a full-grown woman, but I didn't say all were squeeky! Still would have prefered a male version though.
Also, I don't think it's always down to the vocal performance itself. I'd say that generally girls were given a slightly different type of songs to record. The type that was more "easy listening" with innocent lyrics and not so raw and obscure-sounding (like they've recorded it in a garage or something), which I like. I've never been the girlie-girl. There are of course numerous examples of the vice versa, but it's still a tendency I think.