Perhaps here in Gordtown (Toronto) the radio station here was playing it? Perhaps it was just once or twice and she heard it?
Back then, as now, I'm sure Radio Montreal played a much different songlist..
I can't say for sure but all I can do is recount what was told to me. Regardless of when she heard it the point is that she did while living here in Toronto and then thankfully passing on that "same old obsession" to her son..
I was listening to the radio in my friends car 5 hours ago and under threat of death I couldn't recall to you what I listened to..