No problem!
-Yabridge is still actively being developped. The developer responds to issues on it’s Github frequently.
-Ableton 11.x currently has gold status on WineDB. other versions have varying ratings bronze to platinum.
-I don’t use iLok plugins a lot, but I just tried installing one. iLok gave an error for me. Some searching gave me a thread about a user that got a specific iLok version to work though, so you may need to experiment with this yourself: This thread
I don’t know much about CLAP since I always used VSTs (Cubase user after all :P ). I hope more developers will implement it as an alternative, but I don’t have high hopes. .Au could only become a standard because of Apple’s willingness to not support VSTs in Logic. I’m not sure if a third-party format can shift that much weight. All DAWS either support VST, AU or AAX and I don’t think developers want ANOTHER format to maintain.
If she used adobe suite for so many years, it would currently be agony to try and switch. It will take months, maybe even years to unlearn and relearn stuff properly.
Unless she only uses it for some simple cropping or something. Maybe you can add what kind of tools she actually uses?