Thoughts on [name_f]Elodie[/name_f]? With the nn [name_f]Ellie[/name_f]? [name_m]Or[/name_m] rather without one?
[name_f]Ella[/name_f], [name_f]Ellie[/name_f] or [name_f]Elodie[/name_f]?
Does it go with [name_m]Felix[/name_m], [name_f]Lily[/name_f], [name_f]Holly[/name_f], [name_f]Clio[/name_f], [name_f]Lyra[/name_f], [name_f]Isabella[/name_f]?
I was thinking [name_f]Elodie[/name_f] [name_f]Pearl[/name_f].
Which image do you get from it?
[name_f]Elodie[/name_f] is my sisters name! I like [name_f]Elodie[/name_f] and [name_f]Holly[/name_f].
[name_f]Elodie[/name_f] is gorgeous - melodic, bright and pretty! If I was to use a nickname, I’d go with a different one to [name_f]Ellie[/name_f] - it kind of lessens the sparkle for me. [name_f]Lolo[/name_f], [name_f]Lola[/name_f], and [name_f]Edie[/name_f] would be my choice - or [name_f]Elle[/name_f], maybe.
[name_f]Elodie[/name_f] [name_f]Pearl[/name_f] is lovely - elegant, bubbly and bright.
Completely agree with @Greyblue! Dolly is another possible nickname.
I think [name_f]Elodie[/name_f] is beautiful - bright colours and melody/musical associations. I looked after a little french [name_f]Elodie[/name_f] which helped me love it more. I think [name_f]Elodie[/name_f] is a great sister name for all that you listed, except [name_f]Lily[/name_f] I’m afraid. [name_f]Lily[/name_f] and [name_f]Elodie[/name_f] aren’t unusable together, but too similar for me. I feel bad saying this because I think I read yesterday on another topic that [name_f]Lily[/name_f] is the name you are most likely to use.
Perhaps Lyddie could be a nn for [name_f]Elodie[/name_f]?
I love Elodie - it’s beautiful and Elodie Pearl is a great combo! It was on my list for a while and I loved Ellie as a nickname. I also think it pairs well with the sibling names you listed 
I second the melodic imagery from the previous posters!