It sounds like she did everything possible and contacting me was the last resort.
Funny how the tables have turned.
I responded saying she had some nerve to break her shunning when she wanted something from me, to which she responded:
"I respect your free will to make your choices in life even if I do not agree with them. I would not ask you for anything unless it was necessary, which this is for the government purposes. However, if you choose not to give it to me then I guess I will just live with a lower pension for the rest of my life. I already suffered much financial loss from your father and will just have to suffer financial loss from you too if you do not wish to provide the information. I respect that you have this choice and will live with whatever you decide about the SIN #. "