How are Aunty Ifeoma and Papa different?

Papa’s widowed sister Aunty Ifeoma arrives the next day with her children. She is the opposite of her brother – lively, playful and quick to laugh. Aunty Ifeoma calls Mama nwunye m, Igbo for “my wife.” Although she is a Christian, she retains some of her traditional upbringing. Mama explains to Kambili that it means she is accepted.