The woman, 58, charged with four counts of attempted murder, attempted arson and interfering with a corpse at a Morayfield home, was due to be released late yesterday after an address was found.
Police allege she tried to kill two of her step-grandsons, aged 9 and 11, as they slept in their beds.
Police have also accused the woman of twice trying to suffocate the 11-year-old with a pillow and a tea towel over his face as he slept.
Lawyer Michael Bosscher last night confirmed his client would be released from jail.
“The matter was before the Caboolture Magistrates Court today, bail had already been granted, an address was ordered suitable and I expect she will be released tonight,” Mr Bosscher said.