Hmm… good question. Not sure if i know the answer, but i can try.
A cursory google search shows that some people had issues getting their old hard copy’s of logic installed into modern macs.
What version of logic is it? if it’s version 9 you should be ok, if it’s 8 or less, there may be issues.
I got logic 9 shortly after it came out, i switched from reason to that after several years, and it was a download. So i never had to deal with any of what you’re describing really.
Were the projects in question made with the version of logic you have on hard copy?
If so I wouldn’t imagine there would be an issue, as long as you can still install old logic onto modern machines. What kind/year of mac does the Mrs. have?
The only real place i can see there being issues is if her laptop uses the apple silicone. Especially if it’s a hard copy, mac may not know what to do with the disc. I’m not positive though.
I will say, IMO, that being only 200$ Logic Pro X is a crazy stupid deal. I know that DAW’s can be a very divisive topic, but i think it’s well worth the money (at least in my eyes), especially when things like Ableton, Reason (lol), FL and others are often at least twice the price for the complete feature-set.
I bring that up because new logic will automatically convert project files from old versions of logic into usable ones. I have a ton of logic 9 files from back in the day that still work just fine with X. It will ask you if you want to save a copy of the file in the new format and then opens the converted file.
That being said, Apple annoys the piss out of me. If i could run logic on a PC without having to build a hackintosh, I would in a heartbeat. Logic is the only reason i’m still a part of that ecosystem.
Sorry for the non-answer, lol. Let me know if you give it a shot. I’d be curious to know how it goes.