K.T.
It can be such a hard age!!! They want to be independant, but don't really have all of the skills yet to cope with making descisions and dealing with change.
When my son was at that age I would try and preempt by explaining the things I knew would set him off ahead of time. If dessert is always an issue, have a chart for what nights of the week you will be having dessert ahead of time.
Is she actually kicking you, or just saying she will? If she is just saying it, I would leave off the "if you do kick then..." portion, as it is starting a battle of the wills. I would just repeat, "I am sorry that you feel that way (to whatever -no dessert, playing outside, getting to ride the fire truck that just drove by), but we can not do that right now." I have found that if you can be consistant with the response again, and again, kids realize that mom is not going to give in. I know, it is HARD!!! My son used to ask for things and got so excited if I said "maybe", as he knew he had a shot at getting it. Because once I said "No", I would not change my mind, even if I wanted to. One of my favorite sayings at that age was, "no is no is no". Now (he is 13) if he asks for something and I say no and his friends tell him to ask again or ask why, he just says" my mom said no, so it is no". It sunk in!! So now I just need to keep the same convictions with my two babies!
Also I would try and get dad to spend some one on one time with her when he can. She may not realize consiously that she is missing him, but it may be part of teh reason she is acting out more.
Best of luck!!!!
K.