My wife rides a Giant Avail 1 in size 41. I heard they now have an all new line called the "LIV" that comes with full ultegra and just isn't a small bike, but a small bike designed specifically for small women.

Basically it's the new Avail Endurance bike and is supposed to be better than the old.

Here is some info from bike radar.

Liv/Giant Avail composite 1 review - BikeRadar USA