Comparing EV to ICE on purely financial data is kinda missing the entire process of getting off polluting gassers and into more ecologically friendly electric drive.
Almost like comparing propeller airplanes to jets.
Ladies tend to like the idea that Model X is one of the safest SUVs. Will not stink up the garage, and the carbon monoxide gas of the gassers will not endanger their kids if they leave the back window down.
The falcon wing doors make loading and loading kids and car seats easier, provides protection from rain and snow while loading and they do not fold open into the path of oncoming traffic.
The visability out the panorama windshield is amazing, especially for the kids in the back seats. The X has a huge storage capacity for shopping/Costco trips.
The Raven X rides like a dream, will never stall on takeoff, does not need to be warmed up before starting out on colder days.
Best idea is to take her, and your entire family down to a showroom and experience it first hand to see if it will fit the lifestyle.
Re-addressing your financial point, a new, long range 5 seater Model X will cost about $85,000. Fuel costs will be free if you have solar or use Supercharging. If charge up from your carage it will cost less than half what an equilivent premium (maybe even 1/3) gasser SUV will cost. Bonus is that she will never need to stand outside in the cold pumping gasoline into her car.
Maintenance costs on my 2017 X were essentially ZERO. No tune ups, air cleaners, oil changes, etc. They seem to just run and run.
Biggest costs for any of these cars will be depreciation. All large premium gasser SUVs tend to loose much of their value over 5 years. Not sure Tesla will be any better, but early reports is that they retain value much better than the gassers. Some will depend on what happens to the cost of gasoline or electricity over the next 5 years.
