I have sometimes run into this problem when taking any female friends along with me into the woods. I'm always like "you can't wear those colors while we are stealth camping." Then the girl always wants to know where the hell she can find some tough outdoor gear, in neutral colors, that's made for women.
Unfortunately a lot of outdoor and hunting clothes companies out there seem to insist on ruining perfectly good women's outdoor wear with splashes of pink or pastels. I mean really, what kind of twisted fuck thought camo with pink in it was a good idea?
An ex of mine, who had some hips on her, found a solution. Military BDU pants. The U.S. military does make sizes which will fit female service members. My ex used to wear a black pair of them which fit her fine. If the lady does not want to wear camo then just get some black dye and change the color. Ladies, try the shorter sizes.
Often times you can find them in the thrift stores. There has been many a time I found a BDU shirt or pants in a thrift store and they did not fit to the point I said to myself, "A female soldier had to have worn these?"
I suppose many female soldiers don't keep their BDU's after getting out of the military and possibly more male soldiers tend to hold on to theirs, maybe? So ladies, check the thrift stores for the camo, you might find some outdoor wear that fits.