Yeah I go with Cindy on this one too.
Also I find it has a lot to do with one's "form of the day"?
If I feel very femme/girlie my voice go up and matches my mood, all by it self really.
If on the phone having to negotiate issues, it usually goes down, and same during some serious discussions. Also noticed that to be quite normal with a lot of GGs.
However, on the phone I'm practically 100% "sired" which does not bug me, but not so much anymore. This also happens to my ex, but obviously not as often as to me. Yet her voice is actually always lower then mine!
If in company I don't feel it's a problem because it's one's mannerism and presentation that sets the "stage" --- bar having some baritone voice. Mine is alto and also at my age this is more normal. GG's voices also mostly go lower with age and alto can sound quite attractive. A 60+ year old with a girly peep voice is not necessary so nice, or?
Axelle