The new mother may be under a great deal of stress. Taking care of a new baby is extremely challenging, and if she has other children as well, a misbehaving child could push her to her limits. She might think that spanking is a quick way to get the child to stop the unwanted behavior, like if the child is constantly fighting with siblings or making a mess right after she has just cleaned up. But again, there are better, non - violent ways to handle such situations, like teaching the child about consequences through positive communication.
In some stories, the boy might have been causing trouble in the neighborhood where the girl lives. For instance, he could have been vandalizing property or being a nuisance. If the girl's mother caught him in the act, she might have spanked him out of frustration and a desire to stop his bad behavior right away. But this kind of physical punishment is now considered inappropriate in many places, and alternative methods of correction are preferred.
One possible reason could be that the child broke a very important rule, like cheating on a test in the case of a teacher, or lying repeatedly to the mother. However, this still doesn't justify spanking.
One reason could be to show authority. A friend's mother might feel the need to discipline another child if they are causing trouble in her home. Another reason could be a lack of proper communication. Maybe she didn't know how else to get the child to stop misbehaving. For example, if the kids were being too rowdy and not listening to her requests.
One reason could be for comical effect. In a story, it might be used to create a humorous moment when the hubby has done something clumsy or forgetful.
One reason could be that the boy was being disrespectful. For example, if he was using bad language in the friend's house, the mother might spank him as a form of punishment.
One possible reason could be that the boy misbehaved towards the girl. For example, if he bullied her at school or in the neighborhood, the mother might feel the need to discipline him. Another reason could be that the boy did something that violated the family's rules while in their home, like breaking a precious item or being disrespectful.
Sometimes it's because of fighting among friends. If friends get into a physical or verbal fight over something silly like a toy, adults may spank them to show that such behavior is unacceptable. This helps them learn how to resolve conflicts in a more civilized way and respect each other.
In some stories, it might be out of a sense of protection. The woman, such as a mother figure, might spank the teen to keep them from getting into real danger, like running into the street without looking. She uses spanking as a last resort to make the teen understand the seriousness.
One possible reason could be that the new mother has grown up in an environment where she witnessed such strict discipline herself and thinks it's the norm. Another might be extreme stress and lack of support, making her lash out in this inappropriate way.
Perhaps the mother is facing some personal issues or stress and is unable to handle her son's misbehavior herself. So she resorts to having other women spank him. It could also be that she wants to show her son that his actions have consequences not only in front of her but also in front of other authority figures. However, these are not valid justifications as it can harm the child both physically and emotionally.