I have the full map to find the lost sister...but the location dosnt exist.

South East of Trinidad...goes off the map

Jellyfish Marsh... isnt in that region

sooo.. anyone know where I might actually find her??

Already searched high and low

im having the same problem with find the lost uncle in the same location if u figure it  out please leave a reply on my post

yeah i had the same problem aswell just got as close to it before being sent away and managed to get it

Lol! The game has minor problems on the 360 like other originals.