You do not want a ProVari.
Lol. You guys do know that she owns and uses a ProVari, right? Hilarious.

So do many of the other members in here recommending eGo's.
I too recommend starting with an eGo, probably the Twist variant. Here's why. It's adjustable, simple to use and will more than likely last you all day. I recommend clearomizers for pretty much the same reason. You can refill them yourself, you can see how much liquid you have, and they also pretty much last all day. The atomizers inside them are replaceable and easy to replace. With cleaning, you should get a week or more from each atomizer.
Once you have decided that vaping is something you want to commit to, then look into all the other options, of which ProVari is one. It happens to be my favorite as well, but you might want to go a different route. In this...hobby, you can spend a ton of money in pursuit of the perfect vape if you are not careful.