Saas has such a dominating nature, and never appreciates what the Bahu does..But the Bahu doesnt know this, and always in the good books of the Saas... Always pleasing Saas..
So a Saazish was planned by the Kalyanak (BB) of the story , in which the Kalyanak wanted to destroy the loving relation between Saas and Bahu...and so Kalyanak showed something and so the Bahu understood and gave up 'her' Mahaanta and became a modern 'aurat' and then argued with Saas.
Saas was angry why her Bahu is acting strange and then the nakli aasu 'glycerin' was flowing like Ganges river down her face..But the Bahu didnt react the way she wanted..And at last the Saas revealed that she never appreciated what the Bahu did for her..