Sujatha was aware about Ruhi's essay competition at school which means she knows about her school routine. She has been suspicious and has been showing her interest on Ruhi off late. Though her motive to kidnap Ruhi is not known, the chances of her being the one to have abducted Raman and Ishita's child is quite high.
Romi finds Sujata talking to someone about Ruhi and Ishita and that how she is working on gaining their confidence, but he will fail to see that it was Bala who was talking to Sujata about them. What has Bala got to do with Sujata? Did he and Sujata kidnap Ruhi from school? We will know in time.
Meanwhile, Yeh Hai Mohabbatein's ideal parents, Ishita and Raman go searching for Ruhi everywhere. Ishita finds a trail of clues Ruhi would have left behind, by the use of which she will find a house. Whether that will be the house where Ruhi is kept after abduction is yet to be seen.