It’s a sentimental love poem offered by mother for daughter, declaring her undying love.  The illustrations begin and end with mom tucking daughter into bed.  In the in-between pages, the illustrations are fanciful: showing mother and daughter flying through the night sky on a cloud shaped like a whale, landing in a wild countryside, and scampering through a variety of landscapes that support the analogies of the poem itself.  A nice detail in the illustrations is that daughter has curly hair and a slightly darker skin tone than mom:  is this a mixed-race family?  Could be.  If so, it’s just presented as is…no big deal.