No, she said the discussions have been mutually agreeable, meaning they have been friendly. She did not say they have reached an agreement.
We are in negotiations with a specific celebrity artist at this time. We just spoke with them again this week. The negotations are mutually agreeable. It's just a matter of working out the fine details. We have submitted a firm offer based on talking points for final signature."
A firm offer means that it is (possibly) the final offer in the negotiation process, not that it has been accepted. If you don't understand that I can't help you.