Who is Ramiza from The Haj and what is their importance?

Ramiza is the second wife of Ibrahim. She was a cousin to Ibrahim, coming from the Palestinian Wahhabi Beduoin tribe. She is not well trained in running a household so Hagar is returned to the task. At first Ramiza is ignored by Hagar, but they eventually become close and talk about Ibrahim's lovemaking. Ramiza has a son, who dies at several months of age. She has other children that also die in the harsh conditions after leaving Tabah.