Musicposy has hit the nail on the head,
By starting this thread, you yourself have acknowledged you have reached your tolerance for her behaviour, nip it now,
It's just another stage, like the toddler bit, where you iron out any behaviour or attitude changes that need to be made in preparation for the teen hormonal stage, it's really worth getting on top of now, as there is nothing like a fractious teen to really test the soul,
When mine come in from school we run about a bit hit all the chores, they unload their bags, then pack them for the next day, put in PE kits, make sure uniforms are ready,make sure the next day's after school activity, then they can relax, this means that over the evening they have a chance to remember any extra, and there are no surprises or rushes in the morning.
It also means that we have a chance in the morning to do other chores, so it never one big blast,
I hate spending my time reminding people about things that they need to attend to, so we have agreed, everything get done right away, then everyone can relax, it creates so much more time (positive time), and removes nearly all stress.
We are really active, most days we are doing something, if we didn't have a cooperative situation going on, there is absolutely no way we would be able to do so much, they know this, so want to do their bit.
They understood the concept of "energy points" from an early age, and even used it to explain when they were shattered,
When we have encountered reluctance to do what ever, I can quicken a change, by asking if they would like me to spend my energy points on altering their behaviour, or going surfing (other pastimes available), it's their choice, I really don't mind, but you can't have both, occasionally they want to get into it, but it rarely happens.