He caught the falling Amazon, helping her get to the bedroom before laying her gently down onto his mattress.
"Who on earth did this?" Clark asked quietly, surveying the wounds littered over her body with amazement. Normally Diana's skin was practically impervious to wounds, only seeing her in this condition once before, when they had thwarted Darkseid's attempt to take over Earth(again). Even then she didn't look this...exhausted. As if the life had been drained from her bones. 
"Don't answer that. Not yet. Just...stay here. I'll see what I can find." Some of the deeper gashes were still bleeding, the Amazonian's blood seeping into his navy blue sheets at an almost torrential manner. Cauterization would probably be necessary along with bandaging. After flitting into his restroom to withdraw gauze, he told his friend:
"This is going to hurt. A lot. Just hold onto my arm if you need to squeeze something into oblivion." Clark worked as quickly as he could, heat vision searing into her cuts in precise blasts to be bandaged up a few moments later. Within the span of a couple of minutes, he had her in better physical condition than she had come in, but mentally...well, that was another story. 
"Water would be good here, wouldn't it?" A few seconds was all it took for the Kryptonian to retrieve a jug of water from his pantry and hand it to her, giving her a few moments to drink if desired before asking:
"Alright. Now that I have you slightly patched up, mind telling me what's going on? You mentioned Themyscira when you came in...what happened on the island?" Clark knew all too well that the Amazonians had become targets for terrorists, mercenaries and other groups with ill intentions that sought to subjugate the most powerful women in the known universe. All of the attempts Clark knew about failed miserably, which made Diana's current condition only the tip of the figurative iceberg. Had someone succeeded in bringing down the Amazons? If so, they would be neutralized. Fast.