Lips touch three times-free choice

In my reading of the book Lips touch three times by Laini Taylor, I've reached the second story of the book. This story is titled (Spicy little curses such as these) which deals highly in the planning of curses and the negotiations of souls and curses traded between demons and goblins. It's kind of weird how they plan their curses on innocent people in the world who by know shape or form have done any wrong in their lives, they just get caught in the line of fire of these goblins. They sit in hell and plot/barter on the souls of people and make decisions on who must be cursed and sacrificed in order to save others. For example An English woman/ demon named Estella had been bargaining with a dwarf male demon named Vasudev. Vasudef wanted Estella to put a curse on a political figure's baby daughter. The only way Estella agreed to place the curse on the baby, was if Vasudef would save the lives of 10 children he had cursed to die in an Indian village named Kashmiri. Estella felt that it was better to curse one baby rather than let ten innocent children die. But the curse she put on the child would lead to the killing of more innocent people. Anyone who came in contact and had a conversation with the girl would die instantly after she talked to them. It seems to me that even though Estella saved the lives of the children in India, she only contradicted herself because she still placed another curse that would eventually harm and kill people. Its confusing because she obviously has some type of morale or compassion and isn't purely evil like the dwarf Vasudev. Maybe not all the goblins and demons are truly evil