Hi B.,
My babies are 17 months old. Girl and a boy. I began swatting (spanking like you do) on the upper leg or the wrist area when they would not listen to me. Yes, they cried a bit (let them sit there without a hug for about 30 actual seconds) and sometimes would look at me like "what did you do that for?". Last, they both started swatting back and hitting. This did not last long though! I was consistent with saying "no" and following up after four ignored "no's" with a swat that was enough to get their attention and within a month or less both babies knew to stay away from things or to stop when I said no. Remember, they are learning too! It takes a little bit of time to learn to not do something...now, for the tempertantrums both babies have them in their own way. My little girl is amazing in how big a tear she can produce in a second's time. I ignore it - and it has gotten much better!! I don't leave her, but I do stay in the same room and talk to her or brother while it is going on as if it is NOT going on. My son is funny - he would find me and then have the tempertantrum. It was/is hard to walk away from him across the room or into the other room, but I do. He has gotten much better! Mine started with the tempertantrums at about 12-13 months and within two months they will grow out of it as long as you do not turn it into a battle of wills. One other thing my mom taught me to do is TAKE THEM OUT OF THE SITUATION. Your daughter sounds like she wants to please you and does love you (hugging!!!), so just remove her from the situation and start a new one and she will calm down. Sometimes it is just changing the moment that is important - not making your point. Hope this helps. my email is ____@____.com - please email if you want. You seem like a neat mom (and dad)!
I think Robyn has a nice idea, but please be careful in isolating. I have twins and my daughter would be devestated at isolation and my son would not care at all (but would lose trust in me if I left him alone on purpose).