Answer:
This song will be sung by her.
Explanation:
B. Grete might have remained as shy and immature as she was at the beginning of the story
Because it shows that even the small parts of a situation are important and make up the big picture. Just like how everything is made up of tiny little cells. Without them, we wouldn't be here. So "Even the pigs joined in a critical moment" means that even the pigs are important in a critical moment.
There are no sentences to fix :/
If this is a personal question then I would say yes it is nobler to die with you're integrity then to live with compromised principles that harm others. Its honestly you're own opinion.