The appropriateness of a mom helping her son in the shower depends on the age and specific circumstances involved. Typically, when a child is very young and unable to bathe themselves, it is normal and necessary for parents, including the mother, to assist with bathing and personal hygiene. As the child grows older and becomes more independent, they will likely start taking showers or baths on their own.
However, as a child reaches a certain age (usually around 5-6 years old), they may start showing signs of wanting more privacy and autonomy. At this point, it's essential for parents to respect their child's growing need for privacy and encourage them to handle their personal hygiene independently.
Every family and cultural context is different, and there is no one-size-fits-all answer to this question. Some cultures may have different norms and practices regarding personal care and privacy within families. The key is to ensure that the level of involvement in personal care is appropriate, respectful, and supportive of the child's development and comfort level.
If there are concerns or uncertainties about appropriate boundaries, it may be helpful for parents to seek advice from a pediatrician or child development expert. These professionals can provide guidance based on the child's specific age, developmental stage, and cultural context.