Complex sentence: Emerald worms her way into Andine's affection in an attempt to persuade her to give up Eliar.Finally, the queen (or "Arya") agrees to sell the other slaves along with Eliar.
Split into simpler sentences: Emerald worms her way into Andine's affection, in an attempt to persuade her to give up Eliar. Andine agrees to sell the other slaves along with Eliar.