Does this nn work?

Can [name_u]Billie[/name_u] be a nickname of -belle names ([name_f]Rosabelle[/name_f], [name_f]Isabelle[/name_f], [name_f]Annabel[/name_f]…)or is it too much of a stretch?

I think it’s too much of a stretch but I have heard people use [name_u]Billie[/name_u] on it’s own for their baby girls.

Well I’ve heard it for [name_f]Belinda[/name_f] so [name_f]Annabel[/name_f] makes as much sense.

I like it for [name_f]Sybil[/name_f]/[name_f]Sybilla[/name_f] and [name_f]Wilhelmina[/name_f] too.

I don’t think its too much of a stretch

It absolutely does, but I prefer [name_u]Billie[/name_u] as a girl name by itself because the others you listed are too girly and common.

I think it could definitely be a nn

I think it could work - especially for [name_f]Isabelle[/name_f]. I’ve heard it used for [name_f]Mabel[/name_f] and [name_f]Elizabeth[/name_f] so I don’t see why it wouldn’t work for [name_f]Belle[/name_f] names

I think [name_u]Billie[/name_u] is a great nickname for any of the ‘bel’ names!

Nicknames aren’t always close or intuitive so you could definitely use [name_u]Billie[/name_u]. I would prefer that she has a more formal name as [name_u]Billie[/name_u] is so casual in a professional sense. We have no way of knowing what her profession or personality will be like so I would choose something like [name_f]Isabelle[/name_f] or suggesting [name_f]Willa[/name_f] (I love this).