Is electricity free?
I am not at all sure how cost-effective these things really are.
If charging from home, it cost me 15.7 cents/kWh on my last power bill (after subtracting flat monthly fees). I get a hair over 3 miles per kWh in my EV driving my normal lead-footed ways (except for when I had the EV in west Texas and was driving 90 mph LOL). So $1 added to my power bill gets me 19 miles.
Of course, that's without taking into account other cost savings like if her college has free charging parking spaces, if there's solar at home to make some of the power free. It also doesn't account for things like higher car insurance (mine went up $70/month, but that was mainly because I was going from liability coverage only for a cheap paid for used car to full coverage on an expensive car). And higher cost up front ("up front" let's be honest, means making car payments not paying cash, so higher cost EV means higher car payments vs new ICE car, thus the question becomes if the payment increase + insurance increase is less than the gas savings + oil change savings).
There are lots of variables.