After Gregors death, his father says, €˜Lets give thanks to God! He crossed himself, and the three women followed his example (Kafka...

Ever
since Gregor's transformation, his family has come to see him as a burden. He is revolting to
look at, unable to work to support the family (he had been the main breadwinner for a while),
and makes having guests over very awkward since he is so hideous. Though his sister and mother
try to be compassionate, their disgust overcomes their ability to love Gregor. They no longer
see him as a human being. After confirming his death, the Samsas start focusing on what they
will do about their daughter Grete's future, all but forgetting they ever had a son.

So when Gregor dies, the entire family is relieved rather than grieved by the loss.
Though there is some indication that Mrs. Samsa is a little grieved when she is tempted to make
the cleaning lady stop poking Gregor's corpse with her broom, overall, they are more than happy
to be free of Gregor and view his death as a mercy from Godthough more a mercy for themselves
rather than the poor, tormented, and lonely Gregor. It is a selfish relief they feel, and their
crossing of themselves, not to mention their uncharitable behavior regarding their son, seems
rather unchristian and highly hypocritical.