Oh wow! I'll keep that in mind but so far the only Canadian I know belongs to me! lol.
My hubby's ex is always demanding raise also. She says if he can afford all the travelling, he can afford to pay more child support as if he has to explain to her what he does with his earnings :

She got insane the moment I blocked her on my Facebook, she even called my husband demanding an explanation! What can I say? She didn't want to be friends with me so... I don't want her going through my private life.
This witchcraft thing you're telling me sounds really bizarre :-\, but I would not worry about it too much if i were you, what goes around comes around. Focus in your life with your husband (I know it's hard with someone bothering you all the time...).
I like to think she is gonna stop bothering us when she realizes there is nothing she can do to interfere in our happiness, so being happy is what I am going to do! ;D