Case in point: The Montrail Solitude ($140; www.montrail.com), which is specifically designed for a woman's foot, being narrower in the heel and higher in the arch. Very light and comfortable, and fine for hiking with light loads on all sorts of trails (no so good for carrying heavier loads on rocky trails). Or, the Tecnica Mizar Mid GTX ($150; www.tecnicausa.com), a lightweight boot that still offers good support and that has a waterproof liner. Asolo's FSN 95 GTX ($150; www.asolo.com) is another excellent light boot, one that has proven extremely popular since its introduction in 2001. Very comfortable, with the support of a boot weighing much more.
Of course, with footwear, fit is everything. So don't just take this list into the store and buy whatever is in stock. Try several boots and several models, and listen to your shoe fitter's advice.
Otherwise, have a great trek!
For more hiking-boot options, check out Outside's 2004 Buyer's Guide.