Well, I bought my '10 Vector LTX-GT to be a shared sled between my wife & I. When she's with me or a group of us, she gets the Vector & I get the Apex.
She is 5' 1" 115 lbs, and she loves riding it. She came off a 'Cat Z440 (featherweight fan) and she says the Vector is as easy, or easier than the Z440 was. She has put in quite a few 100 milers & I never hear her complain during the ride, after, or the next day about being sore. The only thing she ever says is the first couple rides of the season, her throttle thumb gets a little fatigued.
Alot will have to do with the setup. To blow my own horn here, may I suggest my Vector/Apex setup?
I, as others on here who have used it will attest to you how well & easy the sled will handle with my setup. Either do a search, or I can PM it to you if you get the Vector.
Furthermore, I see you're in the Madison area, I'm just south of Verona, I'd be more than happy to help you set it up in person too.
I have ridden two different REV chassis sleds & hated them both. One was an '06 GSX & the other was an '08 TNT. Sure they were light, but they handled like a bag of $hit!! I'm pretty sure the owner didn't have them setup correct, but they were terrible to turn in sharp corners. You had to slow down to a crawl to keep enough ski pressure, otherwise they both pushed so bad you were in the rhubarb by the time you exited the corner with any speed. Aweful handling, just aweful. A constant battle to keep 'em pointed where you wanted them to go, and that's the LAST thing a lesser experienced rider needs. Especially a woman. If she doesn't feel confident on the sled, it's gonna be a long winter for her & YOU.
Hell, I had my '08 FX Nytro setup to corner 10x better than either of those two 'Doos.