Until Alex was 17 she lived togehter with her mother her father Brendan, and her three brothers(Decky, Derek, Ryan) in a house. Shorly after Alex's 17th birthday her mother left her family. Since her father could not cope with it, Alex took care of her younger brothers and did the housework. When Alex died her oldest brother Ryan took over her role. Presumably Alex's brothers and her father are still living there.