There's nothing in Padmé that feels any hesitation or uncertainty as she slips an arm around Obi-Wan's shoulders, her other hand carefully (if slightly absently) discarding the needlework in her lap so she can slip off the chair and kneel as well. It changes the angle of their kiss and presses their bodies against one another, but there's not even one second of pause. She trusts Obi-Wan, she feels safe with him, and she wants to wrap that feeling around her for as long as possible. She wants to help him feel that way as well, to remind each other that they're not alone out here, and to let go of their sorrow for just a little while.