DD is 18 months, she's recently starting hitting, (usually while shouting "no"). I seem to be the only person she wants to hit, about 50% of the time I have no idea what she is frustrated about. I tell her no hitting and hold my hand up so she can't hit. But I don't know what else to do.
She also hits her toys or cushions, I'm torn as to whether to let her do that to get the frustation out, or try and stop her.
Today she started stamping and my hand was on the floor, so she targetted it (and it really hurt), again i told her no, but she just laughs and carries on. Last night we were playing nicely with her brushing my hair, then she started hitting me hard over the head with a hair brush.
What can I do to get the message to her that this is not acceptable?