My partners estranged spouse has made allegations which can…

My partner's estranged spouse has made allegations which can seriously harm my career. I am a child therapist and she has told my partner as well as the children that I "should never be around children" and that everything I say is performing therapy on the children (which is extremely unethical and I could lose my career) and that everything I say is not true. She has told this to professionals, my partner, her children, and others. She has had her lawyer write letters claiming things happened while I was present with the children which did not and even went so far as to have her lawyer write a letter telling me I could not drop off the children because I would not engage in a screaming match. She actually chased after me, screaming at me all the way to the road, screamed at me across the street, and this was all infront of the girls school with parents dropping off their kids. She has eldest daughter reporting everything that happens at their father's place while I am present. If my partner happens to ask anything about what they do when they are not with him, they get a terrified look on their face, say they did nothing and watched a movie. They were even afraid to answer a simple question, of "did you have an easter egg hunt". She has attacked him, in the parent planning meetings and the sole focus, for her was to get rid of me. She has made these allegations to therapists, her lawyer, my partner, etc. I am studying for my doctorate. I am very serious about my career. I am a child therapist. Everything we have done -- my partner and I, has been in the best interests of the children. All of the professionals have demanded to know why she is so focused on me. She has been told to receive therapy due to being too volatile around the children. She has claimed almost everything my partner does with the children -- such as tobaggoning will cause them serious harm.. The children have told my partner, their mother has said, I am doing therapy on them, that everything I say is not true, that they should be afraid to talk to me, and they are afraid. They were not afraid to talk to me when I first met them.
She has told them, when they had lice, that I gave it to them, and thus they need to stay clear of me.

This woman has said, her father has an interest sexually in young girls, yet she sends her daughters over to her parent's home everytime they are supposed to be in her care. Clearly these allegations of her father are untrue. I am very concerned of the allegations she has made and will make about me and it's impact on my career.

I am also very concerned of how this is affecting and impacting the girls.

My partner and his wife are going through the divorce process. He has had to cut off in person and phone contact due to her numerous calls and that she yells and screams at him each time she communicates with him. When he cut off the in person communication, she hid her phone number to call him and hid the children from him, and after he called her and was yelling on the phone at her about it, she said, "see isn't this nice, this is the way it is supposed to be."

My parnter and I are moving in together soon. I am very concerned about what this woman will do and it's impact on the children as well as my career and my partner.

Professionals have told her to stop, my partner has told her to stop. She will not stop.

To date, no lawyer has been involved, other than her lawyer with the false allegation letters, regarding her treatment toward me.

This woman has discussed all of the issues of the divorce and my relationship with their father, at length. The girls are tired of talking about the divorce. We do not do this with them. Both girls have expressed a concern of growing up adn becoming an adult because they believe they will worry too much.

She has told these girls to be afraid of me, and they are.

What can I do?

Thank you. (I am in Ontario)