After they came towards the maze, and have their passionate kiss together, Charlotte was currently holding hands with Louis. Although no one talked to them about what had happened, earlier, Charlotte knew that Louis enjoyed it.
If he hadn't enjoyed it, she wouldn't be able to see his ears turning red. It was only after that, that's why Charlotte had the same expression
Her face, ears, and neck were all red enough to the point that she couldn't help but focused her gaze on Louis' back
Never did she realize how tall and lean his back was, until now. Well, every second she feels like looking at him, every second she felt like her heart was going to burst. No, she doesn't want it to happen that way. Either way, all she wanted was for her to have good emotions towards Louis