gender reassignment surgery is not an obligation just bc you’re trans. It’s very possible she’s had a surgery, or not, can’t really know. And anyway, it’s none of our business whether Dominique (or any trans person for that matter) has done anything (or not) to their body.
It also doesn’t really make sense to say ‘it makes more sense that viper is with a trans woman’. As far as any of us know, he’s straight. He’s with a woman, so he continues to be straight.