Thanks a lot, but screenshot of barn and info that inside did not changed at all does proved that i do find a solution with saving my own old save.
What i did is that i do edit my save and found "Barnunderconstruction" and "Barnexpanded"(Do not select it first and it would be activated after construction)
I do select "Barnunderconstruction", and start the game again, use my save(i on purpose saved outside farm)
Barn was started to be constructed by workers, i did sleep for it for ~2-3 days and then barn was finished as was showed on your screenshot and when i do go to Annabelle she in her dialogue did reward hero with 3 missing scene+quest to upgrade barn is completed in questlog.
The only thing what did bothered me is that inside of barn was not changed despite i kinda expect some changed and see small demi-minotaurs sleep there and Annabelle. But since nooone have it so everything is fine. Maybe it would be changed in next upgrade. Where we can snug to sleeping Annabelle.