Giant do a bike called the ‘Cypher’ which is basically a female specific version of the Trance but the problem you’ll find (and you’ll probably get this with all female specific bikes) is because of the lower volume of them that are traded the potential discounts are a lot lower than on male bikes and it will also be more difficult to get the size you want unless you pay full price.
Of course as has been touched on, you may not need a female specific bike. Taking the Giant Trance as an example (they are fantastic bikes and relatively cheap), Pauls Cycles are doing a 2008 Giant Trance 2 for £929.74p and they are available down to an XS (14.5″) which considering the whole range is well-known for quite low and short for their sizes, is probably not a bad bike to be looking at.