SAN SALVADOR, El Salvador – Holding the microphone close to her lips, Ana Elizondo begins to sing. Her teenage daughters Eunice and Abigail kneel next to her as her 14-year-old son Marcos plays the guitar and her husband Antonio Miranda claps. This Christian family living in the outskirts of San Salvador sings and prays like this four times a week with their family and neighbors.

It's a way for the mourning family to find comfort.

Three years ago, Elizondo's youngest son Josue Miranda, then just 14, disappeared. She remembers the phone call he received just before it happened.

"He was going to have a blind date," Ana explained.

She doesn't know who made the call, but Josue left his job that afternoon to meet a girl and never returned. He was last seen that fateful day at a corner bus stop near the grocery shop where he worked. After that, the trail went cold, police say.

Elizondo counts the days since his disappearance and often cries out loud. She has gone to that corner – and to many others – looking for possible witnesses. She said she's been to the police, to emergency rooms, to local jails and even to the morgue. She's spoken with neighbors, classmates and friends repeatedly.

Every two weeks she takes a one-hour bus ride to the prosecutor’s office to try to get an update.

"But no, there is nothing," she said.

Apart from knowing that he's a minor without police records, and that he disappeared in 2011, the investigators only tell Elizondo what she has become used to hearing: With no body and no witnesses, they have no leads.