If you are in trouble, do not forget your friends or your parent’s friends. A nearby neighbour can help you more than relatives who are far away.
The biggest thing I’ve heard from friends who’ve gone through tough situations is how alone they felt. People (including me) tend to feel scared of how to respond and assume that giving people space is the best tactic. But I’ve found that more often than not, a call, hand-written email or thoughtful email is incredibly appreciated. You may not hear back right away, but people remember when others take a moment acknowledge the tough time they’re going through. One note: I think making contact is different than demanding time or attention from someone dealing with a loss. Make your contact brief and leave the door open for further communication. That way you can tell if they do in fact want to talk, or if they’d prefer some time alone.