Pia has no rights

Hi guys

i might not be right here but as far as i know bani revealed that she is bani and not durga and now that she has married jw for the 4th time. First was in place of pia the was in Dubai and then was in the temple while jai was leaving for london and 4th was recently. And today pia said that the kids are hers but biologically its bani's kids right and it will always be the biological mother's rights over her kids so how can pia take them? with the piece of paper she tricked bani with? so how can pia support them if she has no husband? no money no house?