 In the second place we cannot be required to promote the best interests of a child over and above, and without regard to, the interests of any relevant adult. It might be in the best interests of a child that her guardian give up every waking minute to her care. But no adult should have to sacrifice her own welfare for that of her child. The BIP should thus be interpreted so as to give at least equal consideration to the interests of any adults affected by policies and actions promoting the child’s welfare.