I think (I want to emphasize THINK) the reason she looks nearly unchanged in over 10 years was due to her younger years. IRC I watched an interview with her, and she grew up poor, ended up looking older while she was still (very) young, and that's how she got into sex work.
No UA, but she started out as a waitress in a club, before starting to strip once she was of age.
I could be entirely full of hot air and misremembering an interview that may not had been about Gina Gerson at all, but this is what is coming from my old neuron bank.
Point being, if your childhood isn't that great, you can look like you are middle-aged even when you're 20, and I think that may had been what happened with Gina