L.H.
You might think about planning a girl's treat for just you and she. I have a 9.5 year old daughter. I have really enjoyed planning a couple of times where just she and I went and grabbed an ice cream or went for a walk together. She may just need more Mom time and doesn't realize it. Either way it makes a good connection. She may have some friends mistreating her at school. I've explained to my daughter that her body is changing as well as growing and it requires a lot from her to make it all work. We do daily vitamins, exercise and fresh air. Also I have a book called "What are you so grumpy about?" that's a funny book. We've read it before many times (not when she's grumpy). Then if I need to lighten things up a little I'll quote some parts of the book.
Blessings to you!
L.