No. Not as a formal name. If you like it that much, give her a name it can be used as a shortening/diminutive for, with some imagination - Caroline, Catherine or something. But tbh I don't think it's fair, just because you think it's pretty, to leave her without a more 'proper', substantial name to use if she wants. Naming is giving a gift - one that's supposed to last all someone's life - not (for want of a better image) choosing decor.