Yes my daughter has had the mini facial, manicure and pedicure. I would stick with just the manicure and/or pedicure at that age. The facial was more instructional on good skin care, plus it was done in a treatment room. The manicure & pedicure are done in a more open, bright room. Your DD might be more comfortable with that and you could sit alongside her having your nails done.
As I mentioned, the lounges are same sex, so there is one for the men and one for the women. For any treatment, you're escorted back there and given a bathrobe, slippers and a locker key. The lockers and changing area are kind of separate, but still open. Your DD might be exposed to some nudity while women are changing. Just wanted you to be aware.
Tammi