Pricing is not the only factor but it is a factor. Other factors for her were better basic autopilot than the Ariya, better audio, better infotainment system, more options for customization, more cargo room, better driving feel, better efficiency, easier to charge on road trips, better seats, one pedal driving, sentry mode, and better performance. She always preferred the model Y o the Ariya but liked the Ariya well enough to pick it when the Model Y cost significantly more. But the price drop of the Model Y combined with the tax credit for the Y and loss of tax credit for the Ariya meant that the vehicle she preferred was now less expensive than her sexond choice in the EV market.
Granted, some of these things are subjective, and are not meant to downplay the Ariya at all.
I think it is great that there are now more options in the EV market. I personally drive an ID4 pro and prefer it to both the Ariya and model Y for my own subjective reasons.