In spite of hearing Stiles enter the shelter, Lydia didn't look up. Maybe if he didn't look at her just right, he'd assume she was sleeping and just lay down with her and they wouldn't have to talk, because it wasn't like there was anything she could say to him at the moment that would explain her mood. Anything she could say was only going to make things worse.
But then he spoke and she closed her eyes in a slow blink, sighing softly. So much for that.
"Just a long day, I'm tired," she said and it wasn't entirely a lie. She wasn't physically tired, but overthinking things was always exhausting and always had been for her. She'd promised herself she wouldn't be one of those basket case pregnant women, but she was starting to wonder if she had already become one without even realizing it. That...was not a good feeling nor was it a comforting thought, because if she was already a nut job, she couldn't even imagine how much worse it was going to get over the course of the pregnancy. Everything about everything was suddenly so overwhelming and made her feel insecure with her decisions. "I'm fine." Unfortunately, her body language — the lack of movement or even an attempt to look up at him when she said it — almost definitely betrayed the words.