To show the emperor that someone was trying to poison/kill him. If she had just thrown it on the ground, there would be no evidence. It's a lose-win situation.
Cuz the Duke might reuse his powers on her again. Although the brainwashing is break he might redo it (he was just close by). She need to take fast action so the emperor would be wary.
bro was balls deep talking about "what's my little brother up to?" taeha let's kill him. anyyyways i finally see what y'all see in the dad he looked extra fine this chapter. and is he gonna dress her up??squeee!
my face this whole chapter :0 I DIDNT THINK THEU WOULD GO THERE