Idea: Call her *before* she gets home and give her a heads-up... "I have two suprises for you". Get/prepare something nice for her (surprise #1) and then show her surprise #2. Might ease the blow. Maybe.
Looks cool btw. Is the picture any good? Which model is it? Looking for one myself.
Nice touch with the keyboard shelf, allowing the "old piece of junk" (c) normal people to be kept out of sight...
Perhaps a road to acceptance could be to go with Lyra+modern shiny PS/2 keyboard, Cocolino with a modern optical mouse, and... what to do with the joystick...? (Good choice btw) and hide the PSU and hide/tidy things up in general...? Maybe