I'm certainly no expert here but there's no question that the Swamp in Brussels...populated by many,many,many Germans,Frenchmen,Spaniards and others who very much enjoy their Mercedes limos,Italian villas and smoked salmon luncheons...doesn't want Britain to leave.And simply put that's because they know that the first brick to fall will make it easier for the second brick.
I can easily see how currency traders would see this vote,and the possibility that Corbyn will become PM, as a sign that Brexit won't happen.
The British newspapers are reporting that she has a broad enough coalition to keep her from stepping down.