The mother of missing Queensland teenager Pheobe Bishop shared another heartbreaking update on her disappearance.

The message from the 17-year-old’s mum comes as the search for the girl enters day 11, with concerns growing for her safety.

Kylie Johnson said, in a Facebook post, “our hearts are shattering more and more each day” as the search for her daughter escalates.

“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.

“Being at a loss for words and actions in this whirlwind of uncertainty is overwhelming. The tears flow, the anger and frustrations rise, and most of all, our hearts continue to break more with each passing day.”

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

“Mate, I wish I had the answers, but we must trust that the police and the lights from our wonderful community will help bring her back to us.”

On Saturday, emergency crews conducted a land, water and aerial search in a patch of bushland for the 17-year-old.

Fire and Rescue teams deployed a drone over the Good Night Scrub National Park near Gin Gin, located in the Bundaberg region, around an hour from where Phoebe was last spotted.

Police divers carried out waterway searches of the Good Night Scrub area but did not find any items of interest.

Officers also appealed for members of the public who may have seen a grey Hyundai ix35 in the Good Night Scrub National Park on May 15 to come forward.

Last week, a grey Hyundai ix35 belonging to Pheobe’s housemates was seized by police and declared a crime scene.

Police have not confirmed whether they are searching for footage of that same vehicle in the park.

The homicide squad is assisting in the search, but police say they are still holding out hope that Bishop is alive.

Pheobe was last seen on Thursday, May 15, by her housemates, who say they dropped her off outside the Bundaberg Regional Airport at 8.30am.

She had a ticket to fly to Western Australia, via Brisbane, to visit her boyfriend, but she never entered the terminal or checked in for her flight.

There has been no confirmed sighting of Pheobe or her luggage since then.

Pheobe is described as about 180cm tall, with pale complexion, long dyed red hair, and hazel eyes.