After all the struggle Gulabia went through to make Sugni realize the truth and each time TVS making her out to be a liar by hiding Riwa, how can anyone blame Gulabia for getting angry after TVS's reality is finally revealed to Sugni.TVS even created a wall between the mother-daughter who were so close at one time.
TVS is less of a victim here than Sugni and Gulabia. TVS has broken the both these women's faith. Sugni trusted TVS more than a god and Gulabia trusted him to make her daughter's dreams come true until she came across his deceit. His intentions may be good for Sugni but his lies have hurt her badly, so Gulabia has every right as a mother to explode IMO
yes, I do agree that sugni and gulabia were like do jism and ek jaan hai hum before TVS confessing his love for sugni. and gulb had so many experiences as a second woman in a man's life. She knows it right from her core that how it feels tobe a ''rackel'' or a ''keep'' to a man. And yes, when TVS announced his marriage with sugni infront of all the other thakurs, gulabia was so happy (remember the phone conversation of sugni and gulabia who went to do rai in nearby village) that finally her daughter's dreams are going to be true. Then she saw TVS near revamanzil and her fear started when vicky lied to her that he was not there. and things happened one after the other. when she come to know that tvs wife is alive she became completely rigid about this marriage coz she doesn't want her daughter to face the same as she had in her life.
her character is completely justified as what she did for her only daughter.