I'm getting a bit concerned about DD1 and I'm not sure if it's just hormones or not. She's been on the brink of having her period for over a year now and seems to be developing at a steady rate. She keeps coming to me in the evenings either crying, or saying she feels like crying but can't. She insists she isn't worried about anything and seems to be getting frustrated with herself for not having a reason for feeling this way. I remember being very emotional before I got my period, but I don't remember it going on for this long - it's been around 2 weeks or so.
She's been very sensitive, but not in an ungrateful way, more of a disappointed way: on her birthday she got really upset because most of her friends were away on holidays. Also, she came home from her dads in the middle of the night because she couldn't stop crying. She said her birthday had been disappointing, but at the same time she didn't want me to think she was ungrateful. She was treated like a princess all day, so I think it was just a part of getting older, I remember feeling like that when I started my teens.
She has now told me she wants to see her dad, but she doesn't want to stay over anymore, but she doesn't want me to tell him as she is worried it sounds mean... 
I'm going to make sure I speak with him about this, we all get on really well so I'm sure it won't be a problem. He would rather she was honest, and would never want her to stay if she was uncomfortable.
I feel a bit stuck, any ideas?
TIA 