She didn't want a man and she didn't want to give birth to a baby. An Adult Baby was the perfect solution and so she hunted for one that she could call her own and be the infant she so desperately wanted.
And so it happened that she found Callum, a 50 year old single man who wanted to be a baby more than life itself. But you can't be a baby on your own. Not fully.
And so mummy met baby and a family was formed.