2 Works in Gravedigger (Hollow Knight)
The knight helped Sly recover from the infection. Now Sly can do the same for Myla, and Myla can live again.
With the infection gone, there's work to be done.
things happen offscreen and post game
In all seriousness tho:
The Little Knight had made many small, positive changes in Hallownest during their stay, but...now that they’re gone, what’s to do?