A well connected episode. Ravan realizes in his attempt that Sita has been secured by the Sanyasi's but really I can't understand why the Cvs are making every one chant Sanyasi's even after their identity was revealed. Ravan knew they are raghukul Princes and still proclaim them as Sanyasi's may be he want to think that they are less powerful in this Ashram (Sanyasa) than as Kshathriyas. But the truth was he was aware of their strength well in advance as they had killed his whole army along with his brother (cousins?). So here comes Ravan in disguise and try hard to make Sita aware of his presence with his loud outburst. Sita shook by her reverence and came to her senses and apologize for her mistake and invite him inside.
But hadn't Lakshman warned her that mayavi asuras may come in disguise of Rishi's? But still she invites him forgetting the instructions and then Ravan rejects it by saying he doesn't enter into Grahasta Ashram which is a clear indication that something is wrong but in her anxiety, Sita doesn't realize that and reveals her promise to her BIL. yet again Ravan threatens her that if she sends the Sanyasi empty handed, it may result in her Viyog with that person for whom she is not crossing the line where in he was not sure who had put that safety / sacred line which he could not cross. It was hooting in the dark and it hit its spot, had she realized he was hinting her husband, she had no reasons to worry as the line was drawn by her BIL. When he had specifically in clear words talked about her distancing from her husband, she was concerned of her Kul ka maryada. If she had to uphold her kul ka maryada, she had to keep up her promise to her brother in law as well as she knew what it means to break a vachan to her husband. Either way she had to break on promise, so it would have been better she had waited for her husband & brother in law to come than breaking her promise to both. She did gave word to Ram that she will not come out of the Ashram till his return.
So it was not Raghukul Maryada she was concerned at that moment (as per SKR) but her distancing from her husband.
Sorry, if I hurt everyone's feelings here with this post. But I didn't like that dialogue Cvs made Ravan to utter and Sita succumbing to it. They could have made him say something in line with her clan that they will suffer some ill fate or something but not this dialogue. It was like I got a stone in the morsel I was relishing.