Wiping back tears at a press conference on Thursday, Rhiannon and Tammara Boyd spoke out about Allecha’s disappearance more than a month ago.
"Allecha, if you can hear us, we just want you to know that we love you and we just want you to be safe,” Tammara said.
"Come home, call us, just know that anything that is wrong we can work it out, we can fix it I promise."
27-year-old Allecha, who was based in Wagga Wagga, was last seen on August 10 at Coolamon. According to 7 News, Allecha has not posted on social media or accessed her bank accounts since her disappearance.
"If someone knows something - and someone does - just let us know, just tell us, just anonymously call triple-0, CrimeStoppers, anything - just tell us anything," Tammara said.
According to The Daily Telegraph, a strike force is treating Allecha’s disappearance as “out of character”.
Detectives seized a green and silver Subaru Outback that they believe she was travelling in the day she went missing, and police have searched bushland at Lester State Forest for any leads.
Detective Inspector Darren Cloake appealed for anyone with information to come forward.
"Our stance on this is it is still under investigation, still highly suspicious in terms of our concerns over her disappearance," he said.
"We once again enforce the need for anyone with any information to come forward, even if it is from before her disappearance."