That would be my guess, too. That the Elvish power was only able to contain them for a short time. So maybe a reenforcement.
They all lay their furs close to the fire. Nyles walked idly to her. She gave her the green pill and said, "Have this m'lady. You haven't had yours for the day."
"And what makes you think you could ruin my last chance of relaxation before the first day of ZALE starts? Who are you to do that? Do you know who my parents are?" She asked sharply.
Without even realizing, his brain was telling him that he shouldn't break up with Elena. His heart was telling him that he would get mad when Elena hung out with other men, and he would be happy when Elena was with him.
Love is Sweet: The Nation’s Princess Meets Her True Love