mr. diwana if only things were so simple.
problem arises when grocery doesn’t come into your own house instead the money is spent on buying grocery for sister in law’s house. sister in laws are married why don’t they ask their husbands why do they keep an eye on their brothers money esp when they know he earns only enough for his house only. even in islam there are rights of parents , rights of wife , rights of children but there are no separate rights for brothers and sisters they come into the category of relatives. I don’t think any woman would be so seedhi sadhi that she starves while her sister in laws are enjoying on her and her husband’s money.
I can confidently say no men would take such treatment for their own sister but it’s always okay for wife , she should have bardasht and keep her mouth shut.