International Student Financial Aid

I am a Canadian student. I did not apply for financial aid when I applied to Williams, is it too late to ask for one now? Due to recent financial issues, my family is having trouble funding my college tuition fee.
Or have there been any cases in which international students successfully requested for FA after they got into the colleges? I also received other offers from Swarthmore, Duke, JHU and Cambridge, would this increase my chance of requesting for an FA from Williams?

^ Probably too late at this point.

@AmazingMacaroon The best way to find out whether it is still possible to apply for aid is to call the Financial Aid office at Williams. The accepted students page on the Williams website has contact information: http://admission.williams.edu/admitted-students/