The mother of Queensland teenager Pheobe Bishop has issued new statements, marking almost two weeks since the 17-year-old went missing.

Bishop was due to catch a flight to Western Australia on May 15, but she never made it to Bundaberg Airport.

WATCH THE VIDEO ABOVE: Search for missing Queensland teen Pheobe Bishop continues.

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“As we enter day 11 of Pheobe still not being home our numbness to our tears, to our hearts breaking and this hell is heavy,” her mother Kylie Johnson said on Monday morning.

“Not knowing what to say, what to do or even how to continue to live in this cyclone of uncertainty.

“The tears come, the anger and frustrations come and most of all our hearts are shattering more and more each day.”

Johnson revealed her younger son is struggling to understand Bishop’s disappearance, recounting a heartbreaking conversation they’d had a day earlier.

“Your little man/brother asked yesterday ‘Why won’t Phee take our calls? She always takes our calls!’,” Johnson said.

“Mate I wish I knew,” Johnson told the boy.

“But we have to believe that the police and the lights that our amazing community are leaving on (are) going to bring her home to us.”

Johnson also shared a post on Sunday for International Missing Children’s Day, thanking the Queensland Police Service and wider community for helping in the search for Bishop.

The statements come as cadaver dogs have reportedly been brought in to help locate the missing Bundaberg teen.

Police searched bushland in the Good Night Scrub National Park on Sunday, after expanding the search area on Friday.

This included the national park near Gin Gin, where forensic teams have been spotted collecting and bagging items.

Firefighters, SES crews and specialist police, including police divers, have been searching remote areas near Good Night, deploying drones to scan dense scrub and creek beds.

“Obviously, as time goes by, police have greater concerns as to her disappearance,” Detective Acting Inspector Ryan Thompson said.

“There’s no specific persons of interest. However, police are following up all avenues of inquiry.”

A grey Hyundai ix35, in which Bishop was last seen travelling, has since been seized by police.

Bishop had been living with two housemates, Tanika Bromley and James Wood, at a derelict property in Gin Gin, about 40 minutes west of Bundaberg. That property has now been declared a crime scene.

Bromley and Wood, who are believed to be in a relationship, have been co-operating with police. Authorities have emphasised that there is no suggestion either is involved in Bishop’s disappearance.