It covers all, but one of the unique aspects of children's rights is a balancing between the need for protection and the need for self-determination. The charter is much more along the lines of people's rights of self-determination.
The charter was adopted before the Convention on the Rights of the Child; another reason. Increasingly, the charter is being interpreted to take into account the conventions, but that's a long and detailed process, and I would submit it would be helped by legislation from Parliament that would clarify those issues.