He didn't care what she wanted, or didn't want, for him to do. Right now, the most important thing to him was making for sure that she was okay. And the moan that she gave proved that she really wasn't. So he pushed harder. If nothing else, he could sleep when they got home. For a whole day if he needed to. He could call Hudson to check on Nic, or Tobin, or someone. It didn't matter who. Someone. He could handle himself being bad off far more than he could her. That was the point.
And now, of course, a manager came over, asking if everything was alright and if they needed an ambulance, and if she'd slipped, and all kinds of questions that really amounted to 'do you plan on suing the store', and Alex did his best to answer in the kindest way possible. Including offering to pay for the milk he'd dropped and the coffee that had shattered, but the manager shook his head and told him not to worry. Of course he seemed more concerned now that they weren't moving and Nic was awake, but Alex was determined to be sure she was really okay first.
He leaned down to kiss her forehead and explain things to her. "You blacked out, and you dropped the coffee," he said, "and now all of these people are worried about you and almost didn't let me to you, which I'm sure you can well imagine made me verra angry." Now that she was awake, he was fine. People could talk to him, and he would be human. "Do you think you can stand up? I'd like you take you home, Princess."
Once the show of it all was mostly over, people started moving away from them, and that was its own kind of relief. Not that he cared about making a scene, but he knew Nic was probably embarrassed about it, or would be in a few moments, and that was the last thing she needed on top of everything else.