A soul bond connected two or more people by creating a divine bond between them. The sense of commitment that it created was way too powerful for anyone to resist.
Since Jiang Ying Yue was someone who had learned about every single aspect of the soulbond, she knew how to handle herself against bonds that were formed against her approval or knowledge.
Also, living for hundreds of years and the distance that she had to always keep with Silver all this time, had given her enough time to practice controlling her emotions when it came to soulbonds or soulmates.
But... the same could not be said about the two Immortals. Though it was clear that neither of them was happy or eager about the bonds that had bound them with her, it was also true that the sense of commitment that the bonds had created in their souls would not allow them to think about destroying the bonds.