grace was brought onto the vatt to create a breeding system for astrophage right? he demanded to be put back on the project and he got to keep the temporary lab back in SF, but the moment he figured out how astrophage reproduced is when he was brought over to the carrier in case things blew up. that's fair, that makes sense.
the problem is stratt knows grace's presence will become largely superfluous the moment blackpanels come into the picture. which is wayyy before grace personally meets reddell, since she implies it all the way back during their meeting with lokken. grace makes his own temporary system with the ship's nuclear reactor and what little astrophage they make IS useful to test Dimitri's spin drives, but once reddell sets up the farm in the Sahara desert grace has virtually no reason to stay on the ship. like his job is done. he's the leading expert in the field, sure, but so are hundreds of biologists working around the world from the comfort of their home labs, he could very well just go back to the US by that point... or that would be the case if stratt didn't keep shoving unrelated work into his hands and dragging him to europe and australia and making the other science department heads run their ideas by him first. she doesn't even have the coma gene excuse!!! dr lamai and the blood test only happen after they nuke Antarctica. from that point on she definitely ramps it up, what with having him straight up test future lab equipment for the hail mary, but i feel like she would've tasked him with teaching dubois and shapiro even if he hadn't been coma resistant.
because she likes his insufferable ass. god bless.















