Models tend to overestimate the extent of winds west of a hybrid or subtropical storm, but in this case there will be a very strong pressure gradient between Fiona and a high pressure over the eastern US so it might enhance it a bit. Even right now, recon is finding the strongest winds south and east of the center, while the NW quadrant isn't overly impressive. However, the eastern side has an INSANELY large and strong windfield as per recon.
We'll see how it plays out, but the more impressive winds will likely be over Prince Edward Island and Cape Breton (and of course Sable Island).