Miss Culley is currently believed to be 35 weeks pregnant.
Speaking outside court, her mother said: “We’ve confirmed that the funds have been sent but they need to confirm that they have been received and that is not going to happen until tomorrow.
“She is looking big, pregnant, but she is looking strong.”
Malkhaz Salakaia, representing Miss Culley, said the negotiations “are nearing completion”.
He said: “Plea bargain conditions are known to the family.
“There is a technical issue to be resolved which will take a few days.”
Mr Salakaia previously said he planned to appeal to the president of Georgia to pardon her after finalising the plea deal.
