You are not alone. My DD started 'testing' behaviors at about 18 months and at first we thought that it was just the 'Terrible Twos' it wasn't it got worse. With others she was a docile little lambkin but with us, my Lord!

DW and I even had a private name for her which combined Karakatoa with her name it was so bad. At about 3.5 it calmed down. Hang in there.

Become what you are