Well this is a terrible way to handle it. Honestly it would have been better if she had just returned to the village since she could use that position to poison the village against Sain.
She's so obsessed with him that I'm convinced she's actually horrifically down bad but has been stabbed in the back so many times that she's waiting for the other shoe to drop and justify her trauma
I wonder if this could potentially end with the criminal activity of his father being exposed. It would be a realistic way to nerf the ability of the main villain to act and put him off-balance.