Feeling a little sad today

My first child is a beautiful 9 year old girl ( will be 10 in 2 months) and today she got her period!!. I was expecting it because her body was changing but not this soon. I didn’t get mine until I was 11 years old. She’s my only girl and this feeling sucks! Im sad because she’s growing 😪 and im excited to see her turn to a beautiful women one day but I wish she was a baby forever!