What would you name [name_f]Mabel[/name_f] “[name_u]Billie[/name_u]”'s sister? Should I go for another name with a tomboyish nickname, or some other feminine name like [name_f]Esther[/name_f] or [name_f]Ada[/name_f]?
Also, I’ve been liking [name_u]Billie[/name_u] & [name_f]Jane[/name_f] together lately, do you think they work together?
I dont think you need to have another tomboyish name. [name_u]Billie[/name_u] and [name_f]Jane[/name_f] are adorable together!
[name_u]Billie[/name_u] and [name_f]Jane[/name_f] are great together!!
[name_f]Ada[/name_f] and [name_u]Billie[/name_u] and [name_f]Esther[/name_f] and [name_f]Mabel[/name_f] ‘[name_u]Billie[/name_u]’ would work well too -maybe [name_f]Effie[/name_f] and [name_u]Billie[/name_u] as nn?
I’d also consider
[name_f]Mabel[/name_f] ‘[name_u]Billie[/name_u]’ and…
[name_f]Frances[/name_f] ‘[name_u]Frankie[/name_u]’
[name_f]Lydia[/name_f] ‘Liddy’
[name_f]Georgia[/name_f] ‘[name_u]Georgie[/name_u]’
[name_f]Katherine[/name_f] ‘[name_f]Kitty[/name_f]’/’[name_u]Kit[/name_u]’
[name_f]Lois[/name_f]
[name_f]Emmeline[/name_f] ‘[name_f]Emme[/name_f]’
[name_f]Ivy[/name_f]
[name_f]Josephine[/name_f] ‘[name_u]Josie[/name_u]’ ‘[name_u]Jo[/name_u]’ ‘[name_f]Joanie[/name_f]/[name_f]Joni[/name_f]’
[name_f]Florence[/name_f]
[name_f]Harriet[/name_f]
Jane definitely works with Mabel, but I also love the idea of a feminine name with a spunky nickname.
Some ideas:
Winifred - Winnie
Rosalind - Lindie
Beatrix - Trixie
Beatrice - Betsy
Margaret - Mae/Maisie/Greta/Margie/Margot
Roxanne - Roxie/Roxy
Helena - Lainey/Nell/Nellie/Lenny
Louisa - Lou
Caroline - Connie/Caro
Dorothy - Dot/Dottie/Dodie
Georgia/Georgiana - Georgie
Marigold - Goldie
Rosemary - Romy
Minerva/Miranda - Minnie
Clementine - Clem, Coco
Francesca/Frances - Frankie
Harriet - Hattie
Josephine - Josie/Joy/Joey
Alba - Albie
Susannah - Sunny
[name_m]Hi[/name_m] there.
[name_f]Mabel[/name_f] is so sweet. I’d be tempted to do something along the same lines; old fashioned feminine name w/tomboy nn. Although I do think that [name_u]Billie[/name_u] & [name_f]Jane[/name_f] are lovely together. [name_f]Esther[/name_f] & [name_f]Ada[/name_f] are both great names, but wouldn’t be my first pick as a sister.
[name_m]How[/name_m] about…
[name_f]Beatrice[/name_f] nn [name_f]Bea[/name_f]
[name_f]Frances[/name_f] nn [name_u]Frankie[/name_u] (I much prefer [name_f]Franny[/name_f] or [name_f]Francie[/name_f], but this seems sort of perfect.)
[name_f]Georgina[/name_f] (or [name_f]Georgia[/name_f]/[name_f]Georgiana[/name_f]…[name_f]Georgina[/name_f] fits best!) nn [name_u]Georgie[/name_u]…so cute!
[name_f]Harriet[/name_f] nn [name_f]Hattie[/name_f]
[name_f]Imogen[/name_f] nn Idgie
[name_f]Jemima[/name_f] nn [name_u]Jem[/name_u]
[name_f]Kathleen[/name_f] nn [name_u]Kit[/name_u]…love this!
[name_f]Katherine[/name_f] nn [name_u]Kit[/name_u]…[name_f]Kathleen[/name_f] is more interesting though.
[name_f]Penelope[/name_f] nn [name_m]Pip[/name_m]?
[name_f]Philippa[/name_f] nn [name_m]Pip[/name_m], but I like [name_f]Penelope[/name_f] much more, & especially w/[name_f]Mabel[/name_f].
[name_f]Susanna[/name_f] nn [name_u]Scout[/name_u]!
[name_f]Theodora[/name_f] nn [name_u]Teddy[/name_u]…kind of boyish for my tastes, but totally works.
[name_f]Hope[/name_f] this helps. 
You don’t have to have a tomboyish nn but if you want one, possibly “[name_u]Jay[/name_u]” for [name_f]Jane[/name_f]? or “[name_u]Jo[/name_u]” since [name_f]Jane[/name_f] is the feminine form of [name_m]John[/name_m]. I think [name_u]Billie[/name_u] and [name_f]Jane[/name_f] work very well.
I think any of those options would work well with [name_f]Mabel[/name_f] “[name_u]Billie[/name_u]” really. I think [name_f]Esther[/name_f] meshes best stylistically with [name_f]Mabel[/name_f] and I feel like Etsy would be a sweet yet spunky nickname for it that would work beautifully with [name_u]Billie[/name_u].
Well, it also starts with a B, but [name_u]Bo[/name_u] was my first thought. I think they match well stylistically. I also like [name_u]Billie[/name_u] with [name_u]Jude[/name_u] or [name_u]Rue[/name_u]. I think a tomboyish name is a better choice, but it’s not necessary. I do like [name_f]Jane[/name_f] a lot and it matches very well with [name_u]Billie[/name_u], but it doesn’t quite have the same cool factor.
[name_f]May[/name_f] I suggest …
[name_f]Mabel[/name_f] “[name_u]Billie[/name_u]” {and} [name_u]Ruby[/name_u] “[name_u]Rue[/name_u]”