It says Punk 02 on her shirt. She's just a clone or cyborg he created. Or artificial human. But she's never Vegapunk herself.
But for reminder- it COULD BE that she's NOT totally a clone tho.. i literally thought she was a human but with cyborg dna, like reiju was.. i mean, look at her.. if she's only a totally cyborg, then it doesn't make sense if she wasn't act like how seraphim-s and old pacifista-s, and how ichiji niji and yonji used to be; an emotionless cyborgs.. so in this term, she could be a cyborg but in the first place, i thought she was a human being after all but still able to act like normal human beings, even after being put on super human experiment.. instead of turned to emotionless cyborgs just like germa-s(except reiju), seraphim-s and pacifista-s used to be..