.. Helping the hurt troll Trollhilde

You need to build a helping tool. First, you need rope.

There's some rope in the church.

Great, and next attach something into it. Something that can catch the dagger.

Like a bear trap ( You find the bear trap inside the sunken cabin. Enter the cabin from the side. ) .

Very well. Combine the bear trap with the rope.

Use it on the dagger on Trollhilde.