Even Lois had a hard time recognizing Clark at first, to the point that she tried to pull back when he first grabbed her arm. In all the time that Lois had known Clark she had never seen him like that before. And it wasn't just the scar. It was all of it. The scar was part of it, yeah, but there was also the dirt and, most importantly, the anger. They'd had their share of fights, that was for sure. But it was nothing like this. He was flat out cold, it didn't take a psychic to see it.
But then he was loosening his grip and suddenly Lois didn't really feel the need to pull away any more. Because dropping into a pit of apparent zombies would also be bad.
"Clark, it's me!" She snapped at him, freaked out even more that it seemed like Clark didn't know who she was. How could he not know her? She was Lois. Apparently some version of her existed in every dimension Clark existed in. Even if this wasn't the one she knew (she was starting to think that, by the way) he should know some version of her. Preferably one with the same face that she had. "I'm Lois! And I don't know what the hell is going in right now but I swear to god, if you drop me in a pit of zombies I am going to come back and kick your ass. I will find some blue kryptonite somewhere, I don't know where yet, and I will use it to kick your ass."
Sometimes when Lois got scared out of her mind? She tended to run her mouth even more than usual. She would have threatened anything just then, even things she couldn't promise would happen. Like coming back to kick his ass.
There was one other thing Lois was doing, and she didn't even realize it. She was tearing up as she stared up at the guy who had the same basic face (plus a scar) and seemingly powers as her boyfriend. It took a hell of a lot to make Lois Lane cry, but she had a hell of a lot going on in the last three minutes.
"What is wrong with you?" It was a serious question. Clearly there was something wrong with Clark if he was threatening her that way.