Story highlights British teenager Scarlett Keeling died in Indian state of Goa in 2008

Police initially said she drowned; investigators later found she was drugged, raped

(CNN) A judge acquitted two men Friday in the rape and death of British teen Scarlett Keeling in the Indian state of Goa in 2008.

Placido Carvalho and Samson D'Souza were charged with culpable homicide and grievous sexual assault. They denied any wrongdoing.

The girl's mother, Fiona McKeown, has been fighting to uncover what happened to her daughter since her bruised, partially clothed body was found near the shore on a Goa beach more than eight years ago.

McKeown told CNN she was "totally devastated" by the verdict. "I just feel really let down by the system," she said to affiliate CNN News 18. "I just don't have any faith in it anymore."