Really need help naming my main character- little girl

I’ve gone through so many names with this little girl and nothing seems to fit.
Her basic character is she’s a very smart, but very conceited girl living in Manhatten in the 1930s/1940s. Her family is very whealthy and aristocratic. She has curly chocolate brown hair, light skin, dark blue eyes and a huge, magnetic smile. Think young, dark haired [name]Daisy[/name] [name]Buchanan[/name] only much cleverer and less fake. She goes through a major transformation during the course of the story.

So far she has been a [name]Madeleine[/name], [name]Ruth[/name], [name]Rebecca[/name] and [name]Eva[/name], none of which really felt right to me.
I’m trying to keep that 1920s 30s flare to her name without it being to common or too out there.

Her older brother is [name]Nicholas[/name], her mother is [name]Victoria[/name], father is [name]Edward[/name] and grandmother is [name]Augusta[/name].
Last name is [name]McKenzie[/name]
Any suggestions?

When I read her description, I think:
[name]Poppy[/name]
[name]Alice[/name]
[name]Josephine[/name] “[name]Jo[/name]”
[name]Kay[/name]
[name]Beatrice[/name]
[name]Ida[/name]
[name]Rosemary[/name]
[name]Cressida[/name]
[name]Opal[/name]
[name]Ada[/name]
[name]Antoinette[/name] “[name]Toni[/name]”
[name]Della[/name]
[name]Fern[/name]

Here’s lists of the top 200 names in the 1920s and the 1930.

Good [name]Luck[/name]!

Let’s see…what comes to mind…

[name]Georgiana[/name]
[name]Violet[/name]
[name]Penelope[/name]
[name]Persephone[/name]
[name]Cordelia[/name]
[name]Henrietta[/name]
[name]Caroline[/name]
[name]Louisa[/name]

[name]Hope[/name] that helped!

Ooh! [name]Just[/name] thought of another one that I think I like best: [name]Regina[/name].

I know that this name is now more associated with [name]Harry[/name] [name]Potter[/name] than anything else, but [name]Daisy[/name] [name]Buchanan[/name] was actually based off of a famous socialite from Chicago at the time named [name]Ginevra[/name] [name]King[/name]. Perhaps [name]Ginevra[/name] could be a fitting name for your character? Or maybe another more familiar form of that name like [name]Genevieve[/name] or [name]Geneva[/name]?

Otherwise, perhaps …

[name]Virginia[/name]
[name]Pearl[/name]
[name]Martha[/name] ("[name]Mattie[/name]"?)
[name]Agnes[/name]
[name]Louise[/name] / [name]Louisa[/name]
[name]Adele[/name]
[name]Dahlia[/name]
[name]Ruby[/name]
[name]Eleanor[/name] ("[name]Nell[/name]" or “[name]Nora[/name]”?)
[name]Edith[/name] (A socialite named [name]Edith[/name] Cummings was the inspiration for [name]Jordan[/name] [name]Baker[/name] in The Great [name]Gatsby[/name], and there’s also the writer [name]Edith[/name] [name]Wharton[/name] from that time period who came from a very affluent background. “[name]Edie[/name]” could be a cute nickname.)
[name]Cora[/name]
[name]Iona[/name] / [name]Ione[/name]
[name]Rosie[/name] ("[name]Rosie[/name]"?)

Oh, I like jame1881’s suggestion, [name]Cordelia[/name]. I like [name]Cora[/name] too.

[name]Mary[/name]
[name]Rose[/name]
[name]Frances[/name]
[name]Lillian[/name]
[name]Evelyn[/name]
[name]Louise[/name]

[name]Jeanette[/name],
[name]Mildred[/name],
[name]Lois[/name],
[name]Faye[/name],
[name]Imogene[/name],
[name]Winifred[/name],
[name]Rosalie[/name],
[name]Laverne[/name],
[name]Cora[/name],
[name]Opal[/name],
[name]Vivian[/name],
[name]Ethel[/name],

and

[name]Hilda[/name],
[name]Diana[/name],
[name]Myrna[/name],
[name]Eunice[/name],
[name]Yvonne[/name],
[name]Hazel[/name],
[name]Elaine[/name],

The names above are popular names of the 20s and 30s, charming and with all the flair you like, but the names that came to mind when I read the description of your little girl were:

[name]Eileen[/name],
[name]Isobel[/name],
[name]Mary[/name],
[name]Elodie[/name],
[name]Florence[/name], (or [name]Flor[/name], [name]Flora[/name], … since [name]Florence[/name] seems more „old-lady“-ish)
[name]Carroll[/name]

From the description, with family [name]Nicholas[/name], [name]Victoria[/name], [name]Edward[/name], [name]Augusta[/name] and surname [name]McKenzie[/name] i’m thinking:

[name]Lenore[/name]
[name]Ellen[/name]
[name]Alice[/name]
[name]Susan[/name]
[name]Jane[/name]
[name]Isobel[/name]
[name]Nora[/name]
[name]Adele[/name]
[name]Mary[/name]