Neither really 'goes'. But use what you want of course.
How about Margot nn Daisy? Daisy is a traditional nn for Marguerite but you could use it for, well, anything really.
Names I think 'go' include: Florence, Juliet, Beatrice (though could give you Phoebe and Be-be) or, continuing the celestial theme, Aurora, Callista, Ursula, Estella / Estelle / Stella, Celeste.