I missed the date with the librarian cuz I triggered another event. Is the route with her done for?
Unfortunately yes. If you have a save from earlier you could always just not trigger her invite on a date and let the other event play.
Also, please let us save Twig but don't make her a route. Let's just save her and that's it. No need to be "grateful" to the mc
She's going to get multiple routes. One will be very wholesome and you will even get to pet her.