I know that in the Japanese version she mentions "I lost to you" or something to that extent in a "rude tone", since the Japanese use different ways of speaking that are formal, neutral, etc. The English replaced that with "I won't lose to a bunch of losers".
In the end, though, those words were spoken before she noticed she was fading.
Because when that happened, her whole demeanor changed, and she was trying to hold her black particles together with her voice sounding like she was about to cry by the time she was disappearing, saying the exact quote posted here. I dare say, the Japanese VA did an excellent job on that one. But it's Yuko Miyamura, naturally. Expected. To be honest, this is the scene that made me love Larxene, like the cherry on top, I mean, cause I thought she was great already. It's the first example of how maybe she's not what she puts up to be, and I was interested.
Her death reminded me of Saïx's. Where the biggest unemotional, ruthless, and cold Nobody had, not a villainous end, but a heartfelt one where his hand reached desperately to the moon, begging for his Heart (and, now to add, Days had stated he had changed when he became a Nobody, so who knows how much not having a Heart affects a person).
Making them both not so emotionless after all when they are actually presented with reality.