The prosecutor, Gerrie Nel, pointed out that
premeditation didn’t need to be a long-held plan; it could be contained in the time it took Pistorius to walk the eight yards or so from his bed—under which he kept his gun, and where Steenkamp had been earlier—to the bathroom, where she had gone.
"The motive was, he wanted to kill,” the prosecutors said.
Earlier in the hearing, he had mentioned that the prosecution had a sense of why Steenkamp had locked herself in that tiny room. (“She locked that door for a purpose. We’ll get to that purpose.”

He said that
legally, in terms of a motive, it would be enough to say that Pistorius walked to the door with a strong desire to kill his girlfriend, but he suggested that there would be more. Early police statements indicated that neighbors had heard exchanges between them; the mother of a former girlfriend also talked about “a few occasions where things could have gone wrong with her and his gun during the time they dated.”
In reply,
Roux kept arguing as if love and premeditation are not compatible things—that if he can only keep finding people who say that Reeva would have said yes if Oscar proposed, then murder would be deemed impossible.
That is not how love or domestic violence work. The belief that they might, has been known to keep women close to people who hurt them. And
regret, as Nel noted, doesn’t undo premeditation. (“If he felt bad after that, that’s something different.”

Neither do tears. Trying to efface the reality of a sad and violent death with protestations of romance is less so. Love may remain; Reeva Steenkamp, however, is dead.