I have a wealthy aunt who gives expensive gifts like gold jewellery and cellphones to my sister in presence of other siblings. While I know she can gift whatever she wants to whoever she wants, isn’t it my right that she should at least do it privately? Due to this, I sometimes become jealous and cry because my parents cannot afford presents like that for rest of us.
You don’t have the right to control other people. She can gift it to whoever she wants HOWEVER she wants and being jealous is sinful as you are being ungrateful of Allah’s endless favors upon you. You must repent to Allah while showing deep remorse and sincerity and ask Allah to bless her in it. Having said this, she is wrong in breaking other people’s hearts if she was aware of it!