Peter appeals to Magda’s guilt, using language with undertones of religious condemnation. Magda’s choice to drop out is not just unwise, but rather a “sin.” What’s more, her behavior is essentially murder: it is killing Peter in his cancerous state. In using this language, Peter cultivates a sense of guilt in Magda disproportionate to what she is actually doing: dropping out of school may be irresponsible, but Magda comes to view herself as fundamentally bad because of Peter’s overreaction.