Porscha Moberly, Taylah's mother, expressed her concern about the two missing teens on the Victorian Police Facebook page.

"The girl she is with is Ashlee Haynes so please pray for her safe return to as her poor family are so worried as well Nicole Haynes," Ms Moberly said.

Victoria Police confirmed that Taylah was missing with another girl, but could not confirm the name.

Ms Moberly also rebuked those who mocked the spelling of Taylah's name.

" ...in the ones who make jokes of her name etc, that doesn't bother me as all... you are just silly. God forbid it ever happens to you one day."

Taylah Tahi, also known as Turtle, was last seen after she was dropped off at Pakenham station at 7am last Wednesday.

The teen failed to turn up to school that day and police are concerned that she did not have her phone or money on her.

She was last seen wearing black leggings and a grey jumper.

Police are urging anyone with information to please contact them.