 इत्येवं बहुधा सीता सम्प्रधार्य बलाबलम्।।रक्षसां कामरूपत्वान्मेने तं राक्षसाधिपम्। 
 Considering the strength and weakness of demons in that manner Sita thought that Hanuman was none other than the king of demons who can asume any form at will. 