Salam
Don't worry, Allah (swt) is the best of planners.
Like the other sis mentioned, ask ur dad bout marrying outside the family:?
is there a particular reason why it's only done within families?
My sister isn't supporting me at all. she wnted me to marry some1 in her husbands side and since we said no to them she doesnt even talk to me . im soo confused. please help!
^ like Respectall said, it's ur life, not ur sisters. she shud consider ur feeling and thoughts too bout something as big as getting married. Your sister needs to grow up and stop sulking! sorry if this sounds rude, but i mean she's meant to support you in this time of need.
Just do du'a to Allah (swt) and im sure everything will be ok in due course.
w'salam