Hey I didn't know you worked with my sister in law. Wonder when she became a dog trainer.

Seriously you are describing my relationship with my SIL to a T. Imagine having to spend Christmas with your dog trainer, that is what I have to do each year. Last Christmas Day things between us go so bad that she ran to the back of the house to call a family member to bad mouth me, my brother (her husband) went outside and sat in his car and I went out to my Dad's woodworking shop to hide and almost cry. Merry Christmas! Since my Mom died two years ago my SIL (also known as the witch) has directed all her evil rays on me. She started at the funeral and hasn't stopped since.

I have absolutely no advice but I'm listening.