C.G.
Children usually shed their first molars between 9 and 11 years of age. Your daughter seems to be on the earlier side of the charts, she's not way too early, she will be fine. She should be seeing a dentist regularly and you should be able to address these questions. You can find answers to dental questions on the following sites www.padental.org or www.ada.org. Next time you are at the dentist ask them for a "tooth development chart"
Children's teeth begin forming before birth.
As early as 4 months, the first primary, or baby teeth, erupt through the gums. All 20 of the primary teeth usually appear by age 3, although their pace and order of eruption varies.
Permanent teeth begin appearing around age 6. Usually the two lower front teeth are the first to be shed, meanwhile the first set of permanent molars begin to erupt behind the primary molars around the same time. This process will continue until approximately age 21.