How could such a person possibly fill the role of mother?

For instance, a boy cannot take the biological role of mother.

Women in the traditional role of wife and mother hated it.

He feels she wants to take the role of his mother, and is in lust with her.

Lee then took on the role of mother for her four younger siblings.

The dual role of wife and mother is traditionally the most important for a woman.

She'd better resign herself to accepting the traditional role of wife and mother!

She then decides to raise him as her own, thus taking on the role of mother to the infant.

There is nothing simple about the role of mother.

She took the role of "mother" in the family created for Ichihiko.