i think it should be compatible, even though it’s international.
I think it depends where you order it from. If you order it from the Canada Amazon.com it is sold in NTSC format and will play on her dvd player.
Well, I really don’t know anything about the region codes (which explains why this happened) but when I had the DVD imported, it didn’t work on my DVD player in the US, but it did work on my computer.