I'm traveling at the moment, so I can't give you a detailed guide...That partially worked. I got her unstuck from permanent travel at least. Unfortunately her occupation is now stuck at "unavailable" and I can't find what else do I need to change in the save file. Could you help?
In the save file, there should a quest trigger that lists what day/time she'll be available again. It's probably set for a time you've already passed. It's essentially just a time that keeps track of what turn the game needs to do something on. If you can find it and change it to a future date, that's the best way to fix that issue.
Search for "daisy" and you'll probably be able to find it. It should be obvious in context.