Blooper in yesterday's episode

Yesterday when Sheila chachi pleads to Ammaji to save Jhoomer she says to her ," Didi Jhoomer aap ka hi khoon hai" . How can Jhoomer have blood relationship with Ammaji as she is her brother-in-law's daughter? She would have blood relationship with Ammaji's husband and her sons but not with Ammaji.

she didnt said that jhumhar apka khoon hai she said that wo iss khadan ka khoon hai .... she took khadan ka naam