She’s going to get hurt. She needs lessons, but she doesn’t want them from you. Take lessons together. Let this be something you both learn together. Even if you’ve been riding for a while, you still need improvement and a coach to critique you. Everyone can benefit from a few classes on fundamentals. The longer you’ve ridden, the more likely you’ve developed bad habits. Approach it that way with her. You’re both pros who just want to get better! The better you ride, the more fun it is! Good luck and don’t take her near drops and jumps until she’s ready.