A mother of one of three Queensland teenagers who took their own lives after their mental health accommodation closed has disputed coronial findings diverting blame for their deaths away from the closure.

Queensland deputy coroner John Lock ruled the January 2014 closure of the Barrett Adolescent Centre was "not ideal" for the living arrangements of Caitlin Wilkinson Whiticker, William Fowell and Talieha Nebauer.

Justine Wilkinson, mother of suicide victim Caitlin Wilkinson Whiticker, said the centre's closure left her and the other teenagers without proper care. Credit:AAP

But Mr Lock stopped short of directly linking it to their decisions to take their own lives within eight months to the closure of Barrett, a live-in facility for young people with complex mental illnesses on the outskirts of western Brisbane.

In his findings, he noted separate challenges each teenager faced after their transitions to alternative accommodations, namely issues with family members or co- residents.