Padmé knew when other wording was chosen, rather than a direct "yes" or "no," what it could mean. It was a safe way of saying that more thought may be required and that, regardless, there were no guarantees. She wanted to choose her wording carefully in return as well.
"It is. The tenth, at a spot we've chosen by the lake." Padmé confirmed, studying Obi-Wan as she spoke. "It would be understood if it did, though the resulting feelings wouldn't be desired. If it would not cause such stress, would you consider attending? I know we would be happy to have you there."
Padmé could further question the lack of communication at a later date. For now, simple progress seemed to be a key detail to rely on. She knew that Anakin really did wish for Obi-Wan to be able to share in the day, but Anakin also wanted things to be positive for the Jedi Master. He didn't want to be a cause of upset for Obi-Wan and Padmé, personally, didn't want anything shadowing, looming over her wedding. Even with a good deal to process, she trusted Obi-Wan's ability to know his own limits and to make sure that he made the right decision in coming or not coming to the event.