[livi]

Parenthood is THE most difficult, comprehensive and intense project a person will take on. It is burdened with very powerful, primitive instincts and not taken lightly by anyone. Hence, lecturing a parent on their parental competence will hurt like nothing else and likely not proove successful unless the particular parents already have acknowledged a problem and actively seek help.

Even trying to mention it lightly, will often elicit a defensive reaction.

You did right in leaving it alone IMHO.