dude first off... get out of that city... hop a plane to rio or salvador or something...
for sure spend some time with her fam but then travel brasil a bit bro... its a rock the house country and Goiania is inland... not exactly the creme of brasil.
So seriously hop a bus over to brasilia if the flights in goiania are too expensive and fly up to fortaleza.. meet bgirl and go to Jeri... or fly to Salvador and party it up with the reggae craziness... or fly to Natal and string up a hammock on Praia de Pipa for a few chill days...
Basically what I am saying is it would be a terrible waste of flight to brasil to stay in Goiania and not see more of the country.
tchau!