Not at all. Go and listen to the videos. You'll hear her say that when she said "seconds" Captain van Aardt asked her about it and she then said approximately 2 seconds because she couldn't give an exact time. The voice was fading.
Edit: Just read my post again. Didn't mean to be rude, Karmady. Apologies. I'll have a look in my notes. The time is there and I'll see if I can find it.
Oscar trial: Day 2 Part 2 23:15
Burger about giving her statement to Van Aardt . He asked me about the shots. I explained about the shots. He asked me when was the last time you heard her. And I said just afterwards. It was: Screaming. Shots. I still heard her. And the last one was moments after the last shot. And that is how it was taken down.
She says her statement was only a few pages but on the stand she has more time to explain the minute details to the court.
There are some more references to this at other times. I'll add those times as I find them.