All right, yes, Luke probably would have questioned what exactly Leia was doing and how she even knew how to do it, but he wasn't exactly in the best state of mind at the moment. It was taking all of his effort just to stay conscious let alone focus on much else. Later when he wasn't in so much pain he would question it, but for now, it remained unasked. He was grateful for what she was able to do in healing him. It at least took the biting edge off of the pain, allowing him to not feel like he was on the brink of death.
Getting to his feet was painful, but he didn't complain. It was clear Leia was helping him up slowly so as to cause the least amount of pain to him as possible. While he did lean against Leia, he tried not to put his complete weight against her if for nothing else but the fact that she was smaller than he was. The last thing they needed was her faltering and getting hurt. To the best of his ability, he walked with her, though he was still fighting to stay conscious. He hadn't quite anticipated this outcome when he'd surrendered to Vader, but in retrospect, he probably should have. He should've known only something bad would have come out of resisting the Emperor. But it hadn't been for nothing. At least he could say that his injuries weren't for nothing. Not that it would make Leia any less upset with him for having surrendered himself in the first place, but you know, at least they both could know their father had still been in there somewhere.
When he ended up on the couch, he rested there, his head leaned on the back rest. Oh this was going to be horrendous to recover from. And then suddenly, the decoration of the place struck him. All right, this only reinforced the fact he wasn't on Endor or the Death Star. Or, really, any planet he knew. When Leia returned, he lifted his head and took the tea, taking a long drink from it before setting it down for the moment. "Thank you," he said with a little smile. Oh he still hurt, which is why he was remaining still, but at least he wasn't in imminent danger of being killed anymore. Right now, he had no knowledge of where he was or that people were different points in time. So he was merely assuming Leia had sensed him being in trouble and coming to help him. His head was starting to spin, but he couldn't tell if it was from the injuries, from having been moved, or from something else. Or more likely it was from a combination of all three. "Where are we?"
Well, he finally spit out the first question. Which would undoubtedly lead to many others, assuming he had the mental capacity to ask them at the moment. Time would tell in that regard.