Ok, I sent her out test driving last night by herself. I did "dad duty" with daycare pickup/dinner, etc and let her have her own evening.
Here is the take: she is now torn. She wants 50+MPG still, but felt "small" in the Ioniq. She did not like the ride height of the Hybrid. Getting back into her Subaru felt great, up-high, viability, etc. The Ioniq she drove felt "exactly how she thought it would feel". So basically I can say that she does not have an emotional attachment as of last night. However she wants to test car seats this weekend. Overall, she thought acceleration was fine (but then again, the Outback is a mid 9-second vehicle too), brakes were good, it was quiet (not a highway test-drive), and the ride was good. So "good" and she said she could definitely do it but no emotional "wow" attachment. Getting back into the Subaru let her know how twitchy the throttle is at initiation. I think she need to go look at the Niro again.
Now the joke of the evening was that Ford was killing all of the small cars. I told her that she is the reason. "I want to sit up high".
Ford's Hybrid (CMax, and my former Escape Hybrid in the fleet) always did better than expected. I think that it is designed/reported towards heavy-pedal users rather than hyper milers, so they are not penalized as much with harder acceleration (you don't have to flog it as much. Makes sense with fuelly. Thus in the motor pool, they were respectable MPGers. Until we have an airline-like system with every "zero" number style system tracking (every ticket ending in 0 is tracked) and reporting fuel economy, the real-world system will be tough. I am not a fan of CAFE's system (why my dissertation critiqued it) but you got to draw the line somewhere.
So we are back in the decision hinter-land. I still think she wants a hybrid but it has moved to "lets go" to "lets see" Now, it looks like she is being difficult wanting conflicting metrics. However, I think she is lean more and more towards plug-in capacity (We have truly free Lvl 2 access at both of our work locations). Her thing is that if she does give up the Outback, she wants a huge MPG benefit.
1. MPG & Plug-in or Ride Height
2. Cargo/Hatchback
3. Carselts, etc
4. Sunroof, heated seats