It's not surprising that Sawri reacted that way. She had written off Saloni... Unlike Shweta she knew Saloni was alive and in jail....
They never show any scene of Saawri writing a letter to the prison authorities asking for the whereabouts of her mother.. Adopted child try deseperately to connect with their real mother.. Saawi wrote letters to her mother and kept them in a drawer - I would not be surprise if she shows all the letters to Saloni and the audience goes sob, sob... Jiji got a son that yearns for his dead mother, Saloni got a daughter that sole aim in life is to be a servant to her adopted sister (her great sacrifice).
Yesterday's episode Daksh reaction was a son's reaction to prove his mother innoncent. The Saawri's story is she will do everything for a sister - not a girl who will right wrongs or love of family etc...
One of the question that bothered me if Saawri had to chose between Shweta's happiness and Saloni's truth which way would she turn.. Because she always lie to protect Shweta. Now the show is coming to end they will bring out the truth without affecting Shweta.