"I'm sorry," Daizi murmured. She had known for a long time about how pregnancy bothered him, but hearing how woozy he was from spending some time at the exhibit concerned her, and she had no idea what to do about it, or if there could be any sort of intervention. And she could also tell Alec was lying to her, but she guessed whatever was actually in that room was bad indeed, so she didn't question it, as curious as she was, "We can, if there's no way to avoid it. I don't want to torture your brother, and you also seemed pretty horrified. I think that sort of education is important, but maybe it's not the best idea to get it all at once."
Picking at her clothes had become a habit when she was uncomfortable, because since her body was different, and her clothes fit differently, it seemed really obvious when she felt awkward or embarrassed or, currently, guilty. More specifically, guilty about how Xander's extreme discomfort with pregnancy managed to make her feel so insecure, like she needed to apologize for existing-while-pregnant around him, and she knew so deeply it was illogical, and that Xander's feelings were not targeted at her specifically (and even if they were, the opinion of a fifteen year old boy was irrelevant), but even though she knew perfectly well it shouldn't bother her, it did.
And Daizi also did just want to protect him and not make his day terrible, so she smiled and shrugged her shoulders and said, "I wouldn't be depressed to miss that part of the exhibit, I think I'll learn a thing or two about it regardless. So unless you both are aching, or if there isn't a way to avoid it, there's no harm in going somewhere else. There's still the bed of nails!"