It would seem that the quality of vaping gear is inversely proportional to its suitability as a stylish, feminine fashion accessory.
The yet to be released Innokin VTR doesn't come in girly colors but the art deco design is something that some women might like.
If your girlfriend prefers the size of a Twist but wants the taste of dripping combined with the convenience of bottom feeding she might want to use an Innokin VV 3.0 with the new Vision Aurora BFT, basically an attachment that turns a tube battery into a bottom feeder. Todd gave it a good review and I've been very happy with mine. It comes with a regular atty as well as a tube that you can use to make your own atty with the included rebuildable heads. This is my pairing skinned with high tack double-sided adhesive, variegated gold leaf and a laminating sheet from the office supply.
I would second the suggestion to peruse the pretty, girly thread. There are loads of ideas there for beginning to advanced gear.