I get calls from Ontario and Quebec drivers who get speeding tickets in NY, and I've represented a number of them. Today I came across a page from Ontario's Ministry of Transportation that discusses the Ontario demerit point system and specifically mentions violations from New York (Michigan too).
The short story is that if an Ontario driver gets a NY traffic violation, Ontario treats it as if it happened in Ontario. Another site I read suggested that insurance rates could double for higher speeds and other offenses for 5-6 years. Ouch!
It also looks like if I can just get your speed down to 9 mph over the limit, that doesn't count as points in Ontario. Not sure about that, but maybe.