It wouldn't surprise me if men of middle age or older don't hear as much of the high end range of her voice as many women would.

I've done a bit of sound work, and I have found that most men beyond the age of about 35 or 40, have to crank the high end waaaaayyyyyy up because they can't hear it (I suppose because of abusing their ears when they were younger). This could result in a less "little girlish" sound to the men, and maybe even a bit deeper sound, which, I've been told, a lot of men find sexy.