1. Ivy: My favorite. Short and sweet and feminine. A nice inverted match with Lily so each girl would each have a nature reference. Cora and Ivy just sound perfect together to me. It's spunky and less common and every Ivy that I have ever known has been super sweet.
2. Esme: I love this one too, another beautiful name with 4 letters but completely it's own sound. I can definitely see Esme as Cora's little sister.
3. Ella: I've just always loved this name. It sounds very sparkly to me which is also how I feel about Cora and I think it holds it's own next to her.
I think Ivy is my favorite by a slight margin, but they're all great. Cora is Such a beautiful name, it's always been a favorite of mine. You've had some great suggestions and your short list is looking very nice, I'm sure that any name you choose will sound lovely with big sister's. Good luck! =]
I think Emmie is adorable! If you're worried about it being to cutesy, you could always make it a nickname for a longer Em- name! Like Emmeline, Emilia or Emmanuelle.
From you new short list, Ivy and Georgia are definitely my favourites!
Some other options that fit with Cora:
Once again, thank you for all of your help and lovely suggestions. Still not entirely there but DH seems to like Esme, Emmie and Ella best so huge progress! Have the same middle name dilemma as last time - really want to honour my grandmother who is Jean but not a massive fan of the name (neither is she!). Will probably just stick with it but any clever ideas welcomed!
Update! Husband unfortunately went off Esme :(. After a long impasse we are back to Emmie/Emmy or Ella. Ella is quite popular where I live whereas Emmie/Emmy is almost unheard of, which is a positive for me (as Cora is also pretty uncommon here). Still have slight reservations over whether it works on an adult though but don't want to give her a formal name I will never use. Thoughts on the best spelling to use to avoid sounding too cutesy?
Cora and Emma nn Emmie would work. Some full names for Emmie/Emmy/Emme are;
I think the best stand alone spelling of the name would be Emme. Not too childish in appearance, so it would work on an adult, but also, not too grown up.
Emme Kaylee (I know a little girl named Emmy-Kaylee)
Emme Celeste * (definitely a favourite!)
Good Luck! x