XP might NOT run the newest Adobe products. I work on computers for my job & share your opinion on Win10 but I've had to bite the bullet & learned to deal with it. Fortunately there is a wealth of info on the web dealing with 10's idiosyncracies.
Of course, take her out to dinner. Then follow-up with a nice portrait of her that you can hang on the wall. Keep her happy and you'll find that you will have even more time to go out and take photos.
I guess my next body will be the D850. I"ll use my D500 for BIF and anything that needs high continuous speed & my D7100 for backup. I have a low shutter count D5000 I've been considering turning into an IR rig. No real interest in anything mirrorless at this point. I am 72 now & not really interested in building a new closet full of Z series gear.