18-year-old billy-anne huxham was abducted from her caboolture home .
the car she was seen in has been found by police , investigations continue .
police report she has made contact with a family member .
she was allegedly taken by ex-boyfriend and wounded by a machete .
reportedly has wounds on her legs and bruises on her face after the ordeal .
hunt under way for carl garry chapman , 32 , seen driving with the victim after the alleged abduction and is understood to now have a firearm .
perpetrator ` broke into a home and waved gun at residents ' after abduction .