Since she and her family did approve the proofs, I think it's fairly safe to assume that the expression of regret may well have been a marketing ploy that Disney felt necessary, due to the nature of the average American consumer.
Remember, this is a country where breastfeeding women have to fight for the right to breastfeed their babies in public. God forbid their children might see a breast! Look at the hoopla that Janet's breast caused. It logically follows that the exposed back of a child was meant to titillate as well.
