It seemed likely that George did not know Fleur was here then. And in that case, he could only wonder who else might accidentally get into their village. It was one thing for his wife to show up unannounced, but there were plenty of people who could become threats. Greyback. Grindelwald. Barty Crouch Jr. He'd had to contend with them before inside the village.
"No, it's not home," Bill said quietly, wishing that he could assure her better than he seemed capable of doing. "You could, if you wanted." Bill said, that part coming out a bit awkwardly. "I think George could send you back if you don't want to stay here. He's sent others back already." He'd sent her back once already. And maybe that would be best, if she just left now. His chest hurt just at the thought, but surely, it would be better, just this small glimpse, and knowing that she was home safe.
"I don't know," Bill said. "I don't know, to be honest. I haven't seen the spell that makes up this place. I just know that it's some sort of complicate magic. George doesn't have it all figured out yet."