the heart-explosion becoming a fact
Deliberately setting about to make her heart explode has assumed the status of just one of these facts. It was an idea but now is about to become a fact.
Context
The overdose narrated as a quiet ontological shift rather than a drama: the intention to make her heart explode has flattened into just another fact of the room, an idea sliding into concreteness. The affectless register — the same one she'll carry onto the air — is the deveiled endpoint of the love-affair, the terminal binge stripped of everything but the plain administration of too much.