You know its possible. In reality I have seen a devar, actually cousin of husband, taking care of the bhabhi. He would say "bhai aap bhabhi ka thik se dhyan nahi rakhte". He worshiped his bhabhi, though the equation was very different. His parents passed away back to back in 2 years and he was 11 when he came to his cousin and his wife. The wife raised him like her own son. Even today when everyone is married and Bhai and bhabhi are old they live with the devar and his family, not with their son's family. The reason they give is he is our oldest son even though he is not born to us.
Now compare this to the charkrams !!!