Sorta kinda. She's not so much going to be the pervert of the game but more so the incarnation of "Oblivious" xD. She's smart but also a little naive and doesn't understand that her naked body can be a turn-on to others. When it comes to sex, she understands the process of it but doesn't understand the pleasures behind it. So when the light switch flicks, she's going to understand a whole lot more and be eager for more xD.
Given that she's a fair bit more feline than MC/Jade, she also undergoes "heat cycles", but not knowing what they were, she just took to having cold baths whenever they happened. Once MC "scratches the itch" for the first time, she's going to have a whole new world of understanding xD. There's going to be some fun public events when her heat cycle hits lmao.
"Raise a child to believe they're a fish, and surely they'll grow gills." xD It's a dumb little saying I made up when I was younger, but it does hold some logic. You only know what you know. Until you learn otherwise, how could you know anything else? Furthermore, if you grow up with that knowledge and understanding, it can be so heavily engrained in you that it can sometimes defy conventional logic. Sylvie only ever knew the companionship of her parents, who'd been gone for some 600 years. A lot of questions went unanswered, and she just had to come up with the best solution that she could to solve them. So, while some things she doesn't understand, other things she simply just doesn't know.