Help me get to Japan to get Jerry

I have had custody of my grandson since he was born. His Mom gave him up when he was born.  Now that Jerry is 8, my son who now lives in Japan is fighting for custody of Jerry.  I have spent all my money on legal fees.  Now Jerry has to go to Japan for the summer to be with his dad and I have to go to Japan to pick him up.  I do not have the money for the round trip ticket from Houston to Japan. Can someone please help me with my ticket?  Even American Airline miles would help.  Please I am desperate.