Luna noticed the lightsaber, but said nothing about it. Somehow she knew it belonged on him at all times, like Luna's wand. Which she kept on herself at all times, because who knew what might happen? She had it in the bag, though, so as to not arise suspicion.
"I think food sounds good, although I'm not sure which direction to go to find food." Luna started walking to the right, not for any reason, other than it was the direction she faced while she spoke to Anakin.