That's a bummer, sorry to hear that...
We cancelled several family get togethers over the last weekend - one of which I was extremely happy about, the other less so. At the moment we're looking at celebrating some bits of christmas sometime in January... er, hopefully!
But I'm slightly older, wiser mebbe, and definitely more cynical about family stuff... when I was 21 I would have been gutted, so I know how you feel :( ... hope something works out so you don't feel quite so isolated.