Every action that Azrail took, from having a dance with Huifen to talking with her to this last call, all of it was planned, a very well-planned execution to make the life of Huifen a living hell. Just the first call that Huifen got has now marked her with jealousy from all the princesses of the imperial family, that began the first attack.
And while Azrail could have talked and communicated with Huifen directly in her mind, he did it out in the open, going forth to even show that the two of them are having a very good time together, the subtle flirting and words being more than enough to put a fan to the already raging jealousy around.
Lady Xia is already under the eye due to her sudden rise in power, and now with Azrail's move, things have started to get worse. The other princesses could give away the dance opportunity, but now that Azrail has personally called forth Huifen, things have become even more perilous for the subtly smiling little girl.