Su Shiyue wasn't actually trying to test anything; it was just a subconscious slip when she addressed him that way. Now, hearing Su Mu say this, she chuckled awkwardly,
"I misspoke for a moment. Don't take it to heart, Sister Su."
Su Mu also smiled,
"Of course not. Where's Qiqi?"
"She's sleeping upstairs." Mentioning Qiqi softened Shiyue's expression considerably, "She's such a dear child. I thought she wouldn't like me, but she has been calling me 'Auntie' since the moment we first met. I was overjoyed; I don't think I've ever been this happy for such a long time."
Su Mu couldn't tell if it was just her perception, but she felt that the Shiyue of now was quite different from the one she knew years ago—much more gentle and humble, no longer haughty, resembling an elegant young lady from an honorable family. Not the right time to ask her reasons.
The old lady was also taking a nap, so Su Mu didn't want to disturb her. Shiyue seemed to notice her hesitation and smiled faintly,