"So have you ever seen anything like that before?" Melisandre asked to Evelyn after giving her demonstration.
At first Evelyn went to shake her head, but as she replayed what she had just seen in her mind, she remembered a very traumatic memory.
It was during her escape attempt where she had been playing into the researcher's hands, and right when she thought she had made a clean break.
She remembered that he had attached some sort of thin shimmering blue thread to her foot and that it looked quite similar to what Melisandre had just released.
"I think I might have." Evelyn said with a darker tone than she meant to.
She then told Melisandre about the thread that the human researcher had used to ensnare her.
"Yes, that is another application of what I just used, though what that human did would only work on anything much weaker than them." Melisandre said, confirming Evelyn's hunch.