Invictus
My cousin stayed in India for 6 and half months, she is a PR of Canada.
She was asked by the immigration officer " What did you do for so long outside Canada, my cousing replied that, his father needed treatment in India and there was no one else to take care of him except him. The immig officer smiled and said 'Welcome back Home".
I knew that the rule was you cant stay for more than 3X365days= in 5X365days= outside Canada if you wanna maintain your PR status.
besides, Canada (Toronto) is only an hour long journey from most North Easters US cities.