S.D.
Hi C.,
I think precous puberty is the early onset of puberty, right? I'm going to answer assuming this is what you are saying.
I have not been through this but I did study it. Her diet may well be a huge factor in this. The offenders are the hormones found in her milk and meats (eggs too).
Can't offer any advice except really inspect her diet and see that she sticks to a good one.(chemical & hormone free foods)
S.