Minhal, your sister-in-law.
Minhal, your sister-in-law, i.e. the wife of your elder brother Amir, and you live in the same house. Your elder brother Amir and his wife Minhal, i.e. your sister-in-law, live in the room upstairs with her husband. You live in the room downstairs.
About Minhal, your sister-in-law.
Minhal, your sister-in-law, i.e. the wife of your elder brother Amir, and you live in the same house. Your elder brother Amir and his wife Minhal, i.e. your sister-in-law, live in the room upstairs with her husband. You live in the room downstairs.