The time goes back to half a minute ago.
Just as the Witch Sharon had guessed, both the iridescent silk thread and Aex's reminder were illusions cast by Angel.
Under normal circumstances, Witch Sharon would have noticed the peculiarities of the thread and the sound. However, the special effects of the Art of Nightmare Illusion disturbed her five senses, putting her in a bewildered state, causing her to overlook the oddities.
The reason Angel did this wasn't to trick her on purpose but to make a final confirmation.
Before this, he had already roughly pinpointed the location of the substitute object, most likely on her necklace, but he had only one chance to act, so to avoid unexpected issues, he wanted to see it with his own eyes.
By warning Witch Sharon to be careful behind her and deliberately creating a bloody illusion, in the chaos, Witch Sharon would inevitably choose to dodge.
