Once she becomes more comfortable with sex and you guys become more comfortable with each other, I guarantee you’ll get that rougher side. Rough sex ultimately comes from confidence and being secure with yourself. You feel like you know what you’re doing, you trust the person you’re with, you feel like you can expose more of yourself, that’s when it will happen.
If it doesn’t happen after you guys have had sex for a few months, then you can bring it up and just flat out ask her to take you hard! If you’re not comfortable asking for that, then you need to evaluate the level of trust and communication in your relationship and how to improve it.
Really, just give her time. She’s inexperienced! It’s all new to her! Once she feels better and more confident about what she’s doing, she’ll surprise you and probably literally knock you off your feet! π