If this child is a dependent child, according to the current IRCC definition, you have no choice. You must declare her. If you have no parental custody (court ordered), IRCC may then accept that she be then removed from the application. This is up to IRCC to decide...
Thank you for your advice. However, I don’t have custody to the child. In my country, the mother has sole custody if the parents are not married. That is why the mother had the freedom to bring my daughter in the US without my knowledge. I don’t think her American husband will let the child be examined for my pr application.