Yes, buy the guantlets, aka "elephant ears" whatever you want to call them..Works 4 me! Wish I would have know about them 13 years ago when we took off riding at 30 below,( hey we came north from IA, didn't know any better), somehow my handwarmers got clicked off(my mistake) froze my fingers off, found a resort open to warm up( it was New Years Day, they opened for us). If her hands are they only thing getting cold than you/she are doing it right! With the "quantlets or e ears", you can wear those cheap stretchy gloves from the Dollar Store and I find it is easier to find the controls for headlights etc. I love it, plus they make you look like a "Yuppie", which I am NOT!
Oh but another ? She is not riding behind you on a 2 up? That's a whole different situation. We also have a Polaris IQ Cruiser Turbo (2 up) and the handwarmers on the back SUCK! Plus riding on the back is a whole different subject. Unless you need a DDR!! THINK SNOW!! I really hate the fall weather as it is a tease 4 winter. Last weekend at Lakewoods Resort in Cable they had 3 inches of "white gold" on the course! Gone now, been around 70's here! Mother ""FF"" Nature is teasing us!