Blanca Cousins fell to her death at exclusive address in Philippines . Briton Nick Cousins , 57 , and teen 's Filipino mother , Grace , arrested . Mr Cousins said he and his family are 'distraught ' after their loss . They may yet lose custody of their second child , Carla , aged 14 . Blanca and her 14-year-old sister 's births were allegedly not registered . Teens did n't have passports and were educated at private tuition centre . Police have said that Blanca may have been 'unhappy with her life '
Blanca Cousins fell to her death at exclusive address in Hong Kong . Briton Nick Cousins , 57 , and teen 's Filipino mother , Grace , arrested . Mr Cousins said he and his family are 'distraught ' after their loss . They may yet lose custody of their second child , Carla , aged 14 . Blanca and her 14-year-old sister 's births were allegedly not registered . Teens did n't have passports and were educated at private tuition centre . Police have said that Blanca may have been 'unhappy with her life '