He wasn't, and his daddy wasn't, and his daddy wasn't, which all meant that Rosario was on the brink of being tangled up in something... big? Bad? Wholly unknowable?? Lyra didn't know what to do about that. She couldn't stop Rosario, after all.
Lyra couldn't quite bring herself to fully believe in alien takeovers and government conspiracies; instead she was using this conversation as a kind of mental grease to make it easier to believe in the things her mind had pushed aside. Properly shoved aside because it couldn't think about redcaps and lost time when it needed to think about living with her mom again, helping to raise her little sister, holding down a job that would pay the bills, finding another job that gave her a hope of furthering her career, helping her best friend with the world-rocking revelation that her dad was not her bio dad, and also... life, and dating, and- and fucking climate change, and- there was no room to dedicate to working out what three months of lost time meant, or what her own blood meant.
Sometimes, when she'd been sitting with Rosario digging into the AGs, she'd wondered if she should look for her own dad... but her mind just kept saying nope. Nope, Rosario first. Like Rosario's quest was its own kind of... mental grease for her, like focusing on Rosario's bio dad would one day make it easier for her to confront the mystery of her own. Not that Lyra had ever though about it like this before, she'd just been helping a friend! But now that she and Avery were talking about how people couldn't see the truth of the world because they were so distracted by trying to live in it, things were changing.
She downed half her new drink, liquid courage. "I have a different theory," she said. "What if it's not aliens so much as something that's been on earth for a long time. Something primal and ancient. People have been having encounters with unnatural things since forever."