If Icha was Jogis real daughter not Daminis

We alll are thinking that Icha is maids daughter so she gets all Uttaran of tapu, and i was actually thinking of this and i have to say something that even if Icha was Jogis own daughter the story so far shown would have been same , i mean jealousy,selfish ness of tapu, even all those childhood hatered , nani talking side all would have been justified ,tapu being elder sister it would have been common....and ofcourse sisters share clothes and so many things so Uttaran would have been for Icha as Jogis daughter too..... yup i have seen ppl like tapu who cant stand their own sisters happiness and become so dam jealous and insane that they would do anything to destroy others happiness ... Greed and jealousy destroy lifes, but if they would have shown in positive way it would be better ... like tapu realising stuff before she marries veer or so ........