what's this behavior?

[Kel]

I have 4 female pgymies. 1 is the mother of twin 3 yr olds. The mother is acting like a buck just recently. The unrelated female will have none of this & they woke me up with their head butting this early am. I went out there & separated them which calmed her down. But what is her problem & how do I get her to be peaceful again? Also, I'm sorry I'm new here & couldn't figure out how to start a new thread.