Perhaps Shangguan Yun was not looking at her phone, so she only replied by the time Huo Yao reached home.
Y: [Nope. This is a clan secret. The elders would never bring up the subject.]
Y: [Why are you asking?]
Huo Yao changed into her slippers and texted a reply as she walked: [I'm curious.]
Shangguan Yun knew that Huo Yao was not the curious sort. She paused and wrote: [Did something happen? Wei hasn't replied to me yet.]
Huo Yao poured herself a glass of water and sat down on the couch. She typed candidly: [Wei has gone missing]
Y: [What do you mean missing? Couldn't you find him?]
Huo Yao pondered and wrote back: [Nope.]
She pondered before following up with another text message: [Do you think he's doing this to lure me out?]
Y: [I don't think so. What does this have to do with the traitor?]