How old is your daughter?
I really feel for you. My son has always been explosive as well. He is extremely manipulative as well. He wants to remain in control. So if we have a tough time - hitting, kicking, screaming, throwing things, namecalling is a particular favorite these days - I make him calm down in time out. The problem with him is in order for him to keep the control he will reverse the time-out on me. I'll tell him he can get out of time-out and he will refuse. These kids really figure these loop holes out quick.
Mornings were awful here until we started unschooling. Now, I don't have to dread mornings with him anymore. I think school is just particularly anxiety inducing for ADHD. They hate it. They know they are doomed to spend 8 hours trying their hardest to conform without success.
This morning was awful. She has to be at school at 8:15 am. She got out of bed at 7:30 ( later than usual) I cooked her breakfast and had it on the table in five minutes. She refused to eat. Finally after me telling her she will be late until she eats ( recent weight loss of 5 pounds d/t refusing to eat) she ate by 8:00. She refused to get dressed, kicked and spit at me ( in which I told her her consequences after school of no TV and no computer) she proceeded to hit throw objects at the wall and basically destroyed the living room. Finally she realized it was 8:30 and she was late.Boy can I sympathize with tough mornings. I never had issues with my dd becoming physical but there were mornings that I was wrung out by 8:00 a.m.
I discovered that mornings are tough for a lot of ADD/ADHD kids. I was unaware of that until recently. I knew what was happening in my house, but not anyone else's. I started by timing how long it generally takes her to get with the program in the morning. Then I would wake her up with that in mind. After I figured out she needed a good hour in the morning, I started other "incentives" for a morning with no fights.
I started using a chart with my dd. We made a big project out of it by going to buy poster board, stickers, etc. She sat down with me and created it, had input on what would be included on the list and we were able to have an easy-going conversation about how tough mornings were and what we could both do to make it better. Once the chart was up I would simply say, 'Are you following your chart?' or 'What's next on the chart?' It made it easier to just keep directing her back to the written list. Once she got a string of days without problems, we would negotiate a reward. Maybe going to rent a video or a trip to Starbucks for a hot chocolate. Cheap things like that.
BUT, this may not work for you ... hehehe. Many parents work out an early morning schedule for meds so that this doesn't happen at all.