A woman introduced a girl as she is the daughter of the wife of my mother's son what was the girl to her?

A woman introduced a girl as she is the daughter of the wife of my mother's son what was the girl to her?

Explanation
کیونکہ وہ لڑکی اسکے بھائی کی بیٹی ہے اس لیے اسکی بھتیجی لگے گی