That above! They key to finding a good ecig is to *not* buy one at a mall kiosk or Seven-Eleven.
The most popular starter good ecig in the "ecig underground" is the Ego.
A bunch of people here are heavily into quality ecigs so this is the place to start for info - there's a dedicated thread somewhere here.
I have to say, if it wasn't for the world of marijuana and FC, I'd still be smoking cigarettes.
Reason is that one very benevolent regular on this site gifted me with an Ego - and this was against my protest, because I had used a shopping mall ecig and didn't think much of it.
This is where to get a real education on the matter -
http://www.e-cigarette-forum.com/forum/
and yes it is absolutely an addiction in its own right.
However I'm choosing to believe that it's a lot less bad than smoking.
I actually enjoy vaping more than I had ever enjoyed smoking. It's just cleaner and more pleasurable.
Getting the right starter kit will absolutely make it very easy for your girlfriend to transition away from tobacco.