Final fight problem

[I Doss]

So...I'm 99.9% of the way through the game, I've got Natla down to the last smidge of her health bar but the adrenaline dodge has stopped working. I get her riled, she runs at me, I wait for the slow-motion, maintaining target lock, move the stick backwards (or forwards or to the side) and press circle and, rather than dodging in slow motion while getting aiming reticules converging on her head, the game comes out of slow-motion, Lara dodges successfully, and then puts her guns away.

It's really frustrating. Has anyone encountered this before? Know a way around it? I'm playing on the PS2.

Thanks.

[RosePetals]

If you already got Natla down to her last remaining health points, I think you can just gun her down until her health depletes. You can use the 9mm for a faster kill.