The issue I have is this is a younger version of Ms Anna
( Ms Anna is a Standard Olympia7 Model with some adjustments and Evelyn is just different skin texture with minor morphs and made younger) which Rainces slapped into the game as a once off scene.
If I was to added this model it would be as .. I don't know ....a younger sister to Ms Anna who shows up and spoils Bobby's plans... whoops... did not mean to let that out..

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Mas é exactamente por parecer a Ann mais nova que tem interesse...
# Hey Zip, that's exactly why she was so appealing (younger version of Ms Ann). I do like your new model but not as Evelyn. Ms Ann is a very appealing character but she's a ripe/matured body. That younger, slender, delicate version of Ms Ann (Evelyn) was what caught our/my attention.
Model:
We've begged you to bring Evelyn back but changing the model is kind of a deal breaker: if we ask for Lucy we want Demi model, if we ask for Mom we want Olympia 7, so on and so forth. Same goes for Julia and Evelyn.
Troubles:
I believe you'll get some trouble rendering with it because many times you won't be able to tell them apart (Evelyn and Ms Ann) but you can always tweak her hair, clothes (if any), tattoos and piercings (if any),... not to mention the fact their bodies are quite different.
Story:
As for her screenplay, another rival / love interest like Julia - great, awesome. But personally I find it quite frustrating having Evelyn replaced like that. (another mess up like Vicky...)
That new model of yours is great - not as Evelyn - and Jenny needs a friend too so...