Her Royal Baby

From Fictiondb:

Tamsin Dexter is surprised to learn she's become guardian of her orphaned nephew, Henry, who will one day be crown prince of a European country....

Prince Marc of Broitenburg, the darkly handsome prince regent, wants Henry brought up as royalty, and he's not used to hearing "no." But feisty Australian Tammy has no time for titles, and she's determined to give her nephew all the love a baby needs, even if she has to become Marc's stand-in princess....

English version via Renta!