I don’t see anything wrong in Sai asking whether PP would bring food or she has to. She is not taunting. Eighteen year old Sai,who was forced to believe in Pakhi’s importance in her husband’s life( Virat’s behaviour is responsible for Sai’s feeling ) innocently enquired and he reacted like how? I don’t think however close he is to Pakhi,he should just go to her room,at that hour of night. Such things only are making Sai apprehensive in trying to understand his change of heart which he himself is not sure of as yet.