I guess first we would need to know where on her would she like to carry the weapon. My wife uses several options (holsters). From IWB to belly band to purse, even ankle carry occassionally. Most women look for the most comfortable location, but they should understand the most comfortable location may not be the quickest access. Mostly depends on her. Holsters my wife likes are:
1. Uncle Mikes IWB- she likes it because it's soft, but also because she can carry strong side and it's concealed well. For her G26
2. Purse/backpack- "not much to say about that."
3. Belly band (Galco brand)- mostly for those deep concealment times. She says it "rubs" her sometimes.
4. High noon Holster IWB- I just purchased this for her new Kiimber Ultra. We're still breaking in the pistol so she hasn't really used the holster. She seems to like it because it's a soft leather.
5. Cobra skin OWB- she picked this up as a slightly used holster at a gun show. She's tried it and likes it, but she doesn't use a belt much, so the holster is not used much.
That's really it. If you know someone with several holsters or a place where she can try them, it may save you some money.