My guess is that she got a rush from the contact when you first responded to the lawyer so she is enjoying the subsequent letters. Unless Canadian legal practice is substantially different from the US, I doubt that there is any case there. Of course I would also be surprised if you would have grounds for a restraining order against her.
In addition to your daughter's age, didn't she walk away from any custody/visitation years ago. In my jurisdiction, you commit neglect by failing to meet basic parenting functions. My counsel has advised I have no obligation to inform my spouse of any matters concerning our minor child as a result.
Sadly I think it is another situation where the only response is absolute silence. She is obviously getting supply from this little dance. Legally it sounds like she has no grounds. I would stop spending the money on the lawyer and just trash the stuff she is sending.
Two more years of drama for you I guess. Sorry, I had hopes a while back that she was starting to come around.
