Padme was pleased by the idea of seeing Ahsoka and spending some time together. She wanted to get to know her better since she hadn't come across her in her Dreams just yet, so there was a weird bit of unexplored area between them. It was probably coming sooner rather than later now that Padme had dreamed about Anakin being part of the Jedi Order.
She made her way to Ahsoka's place without anything in hand, except a small succulent, because she had to bring something. If Ahsoka didn't want her to bring food then she would bring a plant that hopefully would give her something to focus on later (it was even in a cute dinosaur pot). After parking she made her way up to the front door and stopped short when she noticed Anakin standing there. Why in the world was he here?