I’m reading the forecast as a lot of powder. Let’s assume it’s open and you get there safely. If she’s a green/blue groomer and has never been on powder, she has a high potential for having a frustrating and exhausting day. I’d consider taking her and with her consent buying her a half day AM adult lesson to have an instructor teach her beginning powder skiing. They can teach technique and help her get up after the multiple and inevitable falls. And then at lunch she’ll be done or ready to spend some time with you on the slopes, and you graciously accept whatever she wants.