She's 2.4 going on 17, she's gorgeous, cute, amazing and funny (not she isn't even my pfb, I also have a 5 y old ds) and I'm head over heels with her, but she's Jekyll and Hyde, and the flip side is that she is hugely domineering, she bosses us all about, has no fear of anyone despite pretending to be shy, she screams, roars, smacks, scratches, pinches to get her own way. She used to bite too but doesn't do that as often now. She's stubborn as a mule and in a battle of wills she always gets her own way as quite frankly she doesn't give a crap.
When she wants something she usually asks sweetly in an irresistible "Oh mummy, I wish I had a peppa pig toothbrush. It would be my faaavourite" way. Then if I don't cave in on the spot (which I usually do because she knows which buttons to push) she will ask again with a please, then Mr Hyde pops out and she screams and roars and flails, and arches her back so much the pushchair actually falls over. We jokingly call her feral but honestly sometimes I wonder if there's a zoo out there looking for her. 
Two seconds later while you (and everyone else in the shop) are still staring in openmouthed horror, she has a complete mood change and is speaking in a tiny angelic voice "oh look mummy, a princess soap, it's sooo pretty, I love princesses..." all sweetness and light. She persuaded me to let her walk on the school run today, promised to hold my hand then the minute we got on the road she was bolting every few seconds so I ended having to half carry her as she wailed and kicked.
I've had a toddler before. I know the stages. I don't remember any of this manipulation or being so bloody weak. I come back off every shopping trip with loads of bits for her, she will only eat a few things and if I cook anything else she won't even look at it, she'd rather starve. If she decides she isn't doing something I don't have a hope in hell of persuading her. She demands to come into my bath or shower every time I have one while she's awake and just batters at the door if I say no. She won't stay in bed/go to sleep, she's waking up earlier. She won't sleep in the day any more. Everything is on her terms and I'm so exhausted I could cry!
Please talk to me in small words for I'm obviously stupid now.