M.L.
My 5 year old cries too... I just have to brush his teeth for him. If he doesn't eat, he misses breakfast and goes hungry. It's horrible, but I can't force him to finish his food. I do his hair while he is brushing his teeth. I have his clothes picked out the night before to make it go smoother in the morning.
I give my son a snack in his bag each day, and will include a cookie or something too. If he is acting up, he knows I will march over to his bag and take the cookie out. It isn't so much a reward for good behavior, but a consequence for poor behavior.
Maybe, try spending as much one on one time with her in the evenings as possible. It may have an improvement in her behavior.
Dr. Sears has some excellent discipline advice, including disciplining after divorce and using humor to discipline.
http://www.askdrsears.com/topics/discipline-behavior
he talks about the 'dressing hassles" here:
http://www.askdrsears.com/topics/discipline-behavior/both...