Han and Princess Mara are very alike, Luke thought. They'd bickered constantly since they met, although without the special edge of Leia and Han's spats; but when the Falcon was safe in hyperspace and the twins started to break down, they both showed kindness by quietly exiling themselves to the cockpit and leaving them in peace.
Of course it's Leia, wonderful practical Leia, who was the first one to speak.
"What do we tell them our names are?"
Luke uncurled from her side enough to blink at her, eyes still sore and red. "What?"
"The time for disguise has expired, I'd think. Should we introduce ourselves to the Rebels as Leia and Luke Jinn? They knew...they knew his real name. The Princess called him General Kenobi."
Luke let himself consider the question, hesitantly, cautiously touching the Force for whatever insight it might give him. "...I don't think we should use 'Jinn'."
"Why not?" His sister asked. "Un...that is, he loved Master Qui-Gon. It's not a bad name to have."
"I think..." Luke said slowly, "...I think it should be a memory rather than a disguise." Now that it was spoken, he felt the truth of the words settle on him, like the name he'd used for sixteen years was now as ill-fitting as the clothes he'd worn as a child. He didn't understand why, exactly, and he could tell that Leia understood less; but as he trusted her lead in the practical things, she accepted his conviction until it became her own. He shifted the blanket over his shoulders. "Naberrie?"
"She left us," Leia said quietly, fiercely.
"She didn't choose-"
"She loved our father more than she loved us. If he wasn't there we weren't enough reason to stay."
It wasn't as simple as all that, of course, and she knew it as well as he did: but words were, as ever, just air. He felt the way that name would sit on his sister, and though Luke Naberrie sounded fine to him he wouldn't go where she couldn't follow. "...Skywalker?" He offered, carefully.
(In the moment when the lightsaber stroke fell and Obi-Wan's life winked out, their minds cried out FATHER! as one, but Luke was the only one of them who sent the word towards more than the one man. Leia could have hated him for it, but she knew her twin better than she knew himself, and she knew trying to restrict the expression of his big heart to her exclusive loyalty would be both hopeless and cruel.)
"It was Grandmother's name," Leia said. "And it is...it's the name of someone Obi-Wan Kenobi loved."
"Yes," Luke agreed, and his generous mouth crumpled again. "But he...he..."
On Yavin base, Princess Mara introduces them as Luke and Leia Kenobi. "Your father was a great man," Mon Mothma tells them, and they nod together.