Will Gonzalez in 'Amazonia: the Catherine Miles Story' (1985), 38-40m

An 18 year old Catherine Miles graduates from her boarding school
and takes a trip with her parents to the Amazon. While on a boat
ride, her parents are brutally murdered by a local cannibal tribe
and she is taken prisoner. In order to survive, she adopts the
customs of the tribe with the help of a warrior who has fallen in
love with her, all the while planning vengeance for her parents'
death. He later helps her to escape, and now free, she goes to
find who exactly was behind the death of her parents