I am just trying to think different & see.
If Dev would have married a girl of iswari's choice,
Problems would have been less .
For Dev & his wife.
If a girl has a love marriage- here Sona's was arranged love marriage.
She was dev's choice not iswari's.
Iswari would have been happy with a girl like that dadi bua's DIL.
But whether Dev would be happy with her ?
It is always better for Mamma's boys to marry girl of their mothers choice.
Then trouble from iswari, gkb will be less.
Why ?? Because iswari will take care of that girl because it was her choice.
Iswari may continue to do things for Dev.
That girl may also feel like an outsider-but will try to adjust.
Because for the girl iswari chooses- husband may be only for name sake.
She gets to spend, rest ,be with her husband if iswari allows.
In case of sona- she is an independent girl.
She doesn't want dev's money.
She wants a partner.
What if Natasha had married Dev ?
Then also not much problem for iswari.
Dev doesn't love her.
They will have like a formal relationship.
Natasha won't be there at home for iswari to pester her.
Here sona is st disadvantage.
She is a one woman army.
She doesn't have support of dev / iswari.
That is why she has to be mentally strong to take things forward.
At what juncture dev will be with her - future story should tell us.
Leaving dev is the easiest option.
If it was possible, then sona would not have married Dev,
He is / was the same person.
She had not realized the extent of unhealthy relationship between mother-son duo.
Walking out is easier.
Sona is not a loser. She will come out with flying colors .
She will teach them how to live happily.