Too many men make the mistake of thinking they know what their wife/GF "needs" in terms of a holster and/or gun. You don't know what feels good to her, what's comfortable to her or what's functional to her. Others have said it...if you're gonna go that route, make it a gift certificate unless she's told you exactly what she wants because it's a very personal piece of gear.

Frankly, I wouldn't do it. Buy her something fun.