Nine. Younger than she had been when she decided to be queen, but around the age she had been when she traveled with her father to dying planets. Nine is also the age Anakin was on Tatooine when they first met. It's an important milestone.

"She would have had me wrapped around her finger." and Padmé would have welcomed it!

Why did their birthday have to be that day? Logically, she knows why, but it's...sad. When it should be a celebration.

She has purposefully forced the choking out of her mind - Anakin had been confused; he had assumed she knew Obi-Wan was on the ship. She hadn't known.

"It counts wherever we are." dream or reality. She trusts him. Without the influence of Palpatine, he can be himself.