When it wore off and she woke in the middle of that night - Tyrion was awake and reading - he slept poorly , Sansa knew that . " Poor Margaery , " she said softly almost to herself , but her lord husbands hearing was sharp . " You do n't envy her ? "
According to the above context, choose the best option to answer the following question.
Question: why does Sansa not envy Margaery ?
Options:
- None of the above choices .
 - Marjaery lost her pet dog .
 - Margaery had seen her husband poisoned horribly and was upset by this .
 - Marjaery was being beheaded .


Margaery had seen her husband poisoned horribly and was upset by this .