Brake mismatch: go or nogo?

my wife an I have gravel bikes, Diamondback Haanjo and Haanjenn, they were bottom of the line, purchased last year. the plan was to use these as commuters and errand runners, but they turned out to be quite fun for all sorts of rides. so far this year, it's the only bike I have ridden, this mixed surface thing is great, so there have been upgrades. the first change was to move from TRP Lyra to HyRd on my bike. I was underwhelmed at first, but facebook advised my to change the pads to SwissStop and that made a huge difference. based on that, I bought the same brakes for my wife. unfortunately, while my bike can accommodate 160mm rotors on both ends, her frame will not clear the HyRd caliper with a 160mm adapter. that was disappointing, I prefer that she has the same equipment that I have, or slightly better, I think it helps her confidence, esp on dirt. right now, she has the better wheels and tires, same upgraded drivetrain with a lower granny gear. but that scheme will not work with the brakes. I have reverted her bike to 140mm rear with the HyRd in place, but another option would be TRP Spyre with a 160mm rotor.

HyRd 160 front + HyRd 140 rear
-- or --
HyRd 160 front + Spyre 160 rear

which combo would you prefer? do you think a Spyre 160 will stop as well, or better than an HyRd 140? would there be a dramatic difference in feel at the lever if there is a hyrd on one end and spyre on the other end? I think it's fine if she has a little less braking power at the rear, maybe preferable, my rear locks a little too easily. but I think she would rather have the 160 on the rear. I just don't want it to feel weird at the lever and cause any problems in a tricky spot on a trail.