She pets him. Jeneora Rock was a bit of a mess for a number of reasons, including that bomber that was probably there for her, because plant engineers are valuable. As she is, uh, currently showing and has shown in this facility. She doesn't even really blame him for twitching and getting all plants evacuated after he heard one screaming while being hurt for what was essentially no rational reason. She wasn't aware the rock collapsing was an accident, actually, that makes her feel a bit bad about all of that yelling she did at him. Not entirely, because he really needed it, but... it does color the situation a bit better.
Honestly though, Jeneora is going on the 'mostly intact' end of the spectrum, because while the rest of the town was rubble, the bones of the plant factory were fine! She would know, she was briefly buried alive in there. A town can be rebuilt by ordinary human hands, the infrastructure to handle multiple plants is much harder to come by. In a similar sort of vein, even if the sand steamer was completely and utterly unharmed, it's entirely disqualified. It was built after the Fall, and to only handle a single plant, and shove a lot of the work onto that plant instead of outsourcing it to a factory or human workers. It's basically useless to her purposes and can go rust in the desert for all she cares.
Also if Nai would like to be distracted by work instead of squidgy emotions none of them really know how to deal with: the obvious people to ask about the state of the plant factories at the time the plants were stolen is, you know. The plants themselves. He's better equipped to handle that than she is, would he like to do that?
(Zash is not allowed to have a job. Zash needs cuddles and the reassurance that his two favorite people are A: themselves as he loves them, B: not going to die, and C: being happyish, which is going to be by being little workaholics.)