Then it might be the reason why it sounds so off, because it isn't the same voice.
Not only that, after you answered it was a female voice, I focused more intently on it and I understood why this sound effect annoyed me so much, it is because it sounds forced, overacted, not natural at all, it has no credibility, I could picture the person forcing themselves to pant on a micro, I could not believe it genuinely expressed Nina's feelings.
Anyway, for the sake of consistency and quality, I think it would sound better if the same voice actress voices all sound effects for Nina instead of mixing sounds from different people, don't you think?