[He's got it the wrong way around here. It's not that Saya is more special, but rather that Helix was too important to give up. Back home, where the risks were higher, Aidan was willing to give up everything he had to save the other boy - and here he couldn't even get himself across the dome.
If it had been Helix, he wouldn't have stopped. At least, that's what he's clinging to. ]
Helix..? [Thin and full of worry. This silence is scaring him.]