She's after extra attention, hun. She doesn't care what form it comes in either. That and she is in what mum calls the traumatic 3's.
I'm torn between suggesting that it's her reacting to your emotional upheaval of late or the just as likely possibility that she is just testing the boundaries like 3 year olds are prone to do.
My boy goes through phases where he just doesn't seem to want to just ask for things, he has to whine about everything and I know exactly how you feel. When my boy gets like this, all I want is a break from him. It is just a phase and you will get through it. Remember to breathe, and if you need to at times, go to your room and scream into a pillow.
'People are never perfect but love can be. People waste time looking for the perfect lover rather than creating the perfect love' - Princess Leigh-Cheri from Still Life With Woodpecker.