The issue is not about the children paying for the crimes of the parents it is that the residence permit and the citizenship for the whole family is invalid because they lied about their origins on the applications.
Secondly, as an adult, Monsef lied to her constituents about her country of birth and indeed played on the concept that she was a refugee from Afghanistan. That is a serious integrity issue that she alone is responsible for. She should have had the common decency to resign. Certainly, she should not be a cabinet minister in the Canadian Government. This second issue is not a matter for the citizenship court it is an issue that the Prime Minister  should have dealt with by now.