I'm in favor of first addressing the concerns raised in the first two posts. As a backup plan, though, she might want to consider whether she's starting into a time of having a relative imbalance of estrogen & progesterone. Maybe she's having a few menstrual cycles where an egg isn't released and progesterone isn't produced. I believe this can cause a downshift in vaginal lubrication. I think progesterone cream can be overused and cause its own set of problems, but a pea-sized amount used vaginally might be just the ticket. There's tons to read on the internet about this.