The Question and Answer section for The Metamorphosis is a great resource to ask questions, find answers, and discuss the novel.
Gregor is no longer human. He is a big slimy bug: he found himself changed in his bed into a monstrous vermin. (1.1)
Grete's attitude varies over the course of the story. When Gregor's metamorphosis begins, she is compassionate and caring.
The tone is dispossessed and rather disinterested.