DD (10) is one of the tallest in her year and has definitely started puberty - needs to use deodorant, tiny bit of pubic hair, and very noticeable breast developement.
She's not slept very well this weekend and mentioned a sore tummy this morning. By the time we'd got to school she was happy to go in, and I've said I'll go and collect her if she's ill during the day. But I've suddenly had a panic that she could actually be starting her period 
It seems waaaay too early to me, as I was a late developer, but she's clearly not. Can you please tell me with your DDs, what the time delay was between the beginnings of puberty that she's showing, and periods rearing their ugly heads?