how can we blame Purvi?

How can we blame Purvi for being a hypocrite?

Wont comment on Archana-Purvi because I dont want to get into a debate..

Honestly, when and if they ever show Pia in the show I would like her ask this question to her so called maternal family.
The poor child has no clue of the family but they do! They know that she is alive and regardless of who's daughter she is, she should be remembered and have right. It wasn't her fault that her mom had her or that her father was married when his wife found out. It was none of her fault.
Surprisingly Archu can accept the likes of Punni but not Pia.

^ I honestly want pia to hate them

We actually don't know know if Pia will ever be shown in the show. Ankita's other sister and her kids were never shown in the show after the leap even though before the leap they had a pretty significant part in the story. So maybe Pia's birth was just to cause drama in Arvi's life. Since she already created enough drama (for 20 years) now there is no need for her. Pavitra rishta doesn't need a villain since Sachin's wife, Raunaq and his parents, Soham exist. They don't need a bitter child since Pari exists. They have at least 3 females for a triangle. Even if she was introduced I imagine her character to be very insignificant. Most of the important characters are shown on the first few days except may be the hero who needs a better entry. The later characters like Teju's boyfriend, Teju's boyfriend's brother, Ruchi (is that's Manju's second daughter's name?) they really never mattered.