Saw her response, Zelina seems pretty clearly in the right. The cosplay girl seems mad because she undervalued her services because she was starstruck, then got bootyblasted when Vega was unhappy with the quality of her work.
The two other 'artists' who tried to show she had a pattern of 'exploiting' people were both shown to just be totally lying. One of them she literally offered them money for their work and they refused, and the other claimed she had refused to promote her, despite receipts showing the exact opposite.