I think the ring is pretty, but i think most teens like rings that are simple...meaning there is not a bunch of little diamonds all together. I've noticed that the trend for jewelery is very simple and basic. No more than 3 or 4 stones on most pieces.
Even i like the simple jewelery.
But, that's just an opinion....Don't go by what i say, ask your daughter more questions with out her noticing!
Good luck