Sorry if it has been suggested before, but how about [name_f]Eliana[/name_f]?
I do think [name_u]Everly[/name_u] could work out wonderfully, but it does seem to be a name that is doing the rounds a lot so might not be as one-of-a-kind and timeless as you’re looking for. I do think [name_u]Ember[/name_u] and [name_u]River[/name_u] are cute too.
Let’s try this again…
Tallulah, [name_f]Meadow[/name_f] & [name_f]Paloma[/name_f]
[name_f]Tallulah[/name_f], [name_f]Meadow[/name_f] & [name_f]Zaria[/name_f]
[name_f]Tallulah[/name_f], [name_f]Meadow[/name_f] & [name_f]Lavinia[/name_f]
[name_f]Tallulah[/name_f], [name_f]Meadow[/name_f] & [name_f]Zosia[/name_f]
[name_f]Tallulah[/name_f], [name_f]Meadow[/name_f] & [name_f]Callista[/name_f]
[name_f]Tallulah[/name_f], [name_f]Meadow[/name_f] & [name_u]Haven[/name_u]
[name_f]Tallulah[/name_f], [name_f]Meadow[/name_f] & [name_f]Linnea[/name_f]
[name_f]Tallulah[/name_f], [name_f]Meadow[/name_f] & [name_f]Idony[/name_f]
[name_f]Tallulah[/name_f], [name_f]Meadow[/name_f] & [name_f]Delta[/name_f]
[name_f]Tallulah[/name_f], [name_f]Meadow[/name_f] & [name_f]Nephele[/name_f]
[name_f]Tallulah[/name_f], [name_f]Meadow[/name_f] & [name_u]Quinn[/name_u]
[name_f]Tallulah[/name_f], [name_f]Meadow[/name_f] & [name_f]Lyra[/name_f]
[name_f]Tallulah[/name_f], [name_f]Meadow[/name_f] & [name_f]Afton[/name_f]
[name_f]Tallulah[/name_f], [name_f]Meadow[/name_f] & [name_f]Zinnia[/name_f]
[name_f]Tallulah[/name_f], [name_f]Meadow[/name_f] & [name_f]Saga[/name_f]
[name_f]Tallulah[/name_f], [name_f]Meadow[/name_f] & [name_f]Gaia[/name_f]
[name_f]Tallulah[/name_f], [name_f]Meadow[/name_f] & [name_f]Avonlea[/name_f]
[name_f]Tallulah[/name_f], [name_f]Meadow[/name_f] & [name_f]Calluna[/name_f]
Some of the best hippie names I’ve come across are Soluna and Liluna
I think [name_u]River[/name_u] is great and gorgeous for a girl! 
How about [name_f]Reeva[/name_f] (it is similar to [name_u]River[/name_u])?
Fia (short for [name_f]Ophelia[/name_f])
[name_f]Fiona[/name_f]
[name_f]Fenella[/name_f]
[name_f]Odessa[/name_f]
[name_f]Octavia[/name_f]
[name_f]Elva[/name_f]
[name_f]Elettra[/name_f]
[name_f]Imogen[/name_f]
[name_f]Aurora[/name_f]
[name_f]Faye[/name_f]
[name_f]Iona[/name_f]
[name_f]Saskia[/name_f]
[name_f]Talitha[/name_f]
What about [name_f]Eluned[/name_f]? It’s an old mythological name like [name_f]Avalon[/name_f], you could conceivably use the nicknames [name_f]Elfie[/name_f] and [name_f]Luna[/name_f], and it’s got that E initial you seem to like.
River is soooooo beautiful!
Everly doesn’t sound good to me and it feels rather trendy. It also means [name_u]Wild[/name_u] Boar, soooo…
River has a delightful sound and beautiful imagery!
Other ideas:
[name_f]Ottilie[/name_f]
[name_f]Heidi[/name_f]
[name_f]Lavender[/name_f]
[name_f]Flora[/name_f]
[name_f]Primrose[/name_f]
[name_f]Meadow[/name_f]
Violetta, [name_f]Eleanora[/name_f], [name_f]Cecelia[/name_f]
Names can be so complicated can’t they😉 [name_m]Don[/name_m]’t worry we have your back and are thankful you are willing to let us try to hello.
So based on hubbys take with [name_f]Ophelia[/name_f] and your liking for [name_f]Luna[/name_f] and [name_f]Lana[/name_f] but wanting them longer my suggestions are:
Elaina / [name_f]Elena[/name_f]
[name_f]Rowena[/name_f]
[name_u]Riley[/name_u] (seems like [name_u]River[/name_u] + [name_u]Everly[/name_u])
Lalaine
[name_f]Lorelei[/name_f]
[name_f]Aurelia[/name_f] / Aurelei
[name_f]Allana[/name_f]
[name_f]Avalon[/name_f]
[name_f]Gianna[/name_f]
Jilana
[name_f]Juliana[/name_f]
[name_f]Jolene[/name_f]
[name_f]Elliana[/name_f]
[name_f]Milana[/name_f] / [name_f]Melana[/name_f]
[name_f]Melody[/name_f]
[name_f]Lilliana[/name_f]
My mother in law came round today and said [name_u]Everly[/name_u] sounds like it’s missing the ‘B’. She has a few friends called [name_f]Beverly[/name_f].
So now I’m pretty put off the name. Clearly it wasn’t the one.
Thank you so much for the other suggestions. I’ve realised I’m really fussy 
I’m feeling more like we will call her [name_u]River[/name_u]. Its the name I had for our girls if they had been boys and we won’t be having anymore children. And I do love it.
So… can I ask about middle names please.
I love Bloem. But also loving the name [name_f]Avalon[/name_f].
Hubby has said he likes [name_f]Blossom[/name_f].
So. Thoughts on…
River [name_f]Alma[/name_f] Bloem
[name_u]River[/name_u] [name_f]Blossom[/name_f]
[name_u]River[/name_u] [name_f]Avalon[/name_f] Bloem
[name_u]River[/name_u] Aeon Bloem
[name_u]River[/name_u] [name_f]Elfie[/name_f] Bloem
We’ve been calling her [name_f]Elfie[/name_f] but maybe I should have it as a mn rather than just a nickname?
I love the meaning of [name_f]Alma[/name_f] ([name_f]Soul[/name_f] in Spanish) and Aeon (Life/vital force) and [name_f]Avalon[/name_f], suggested above because it has so much meaning as a place I’ve visited throughout my pregnancy.
But which flows better. Or any other suggestions please 
And to also say thank you so much for all your help 
Everly is the most popular name in my area at the moment, and with all the various spellings added up it’s much more popular than it is on the charts.