Thanks you for suggestions dear berries! I really like Elena Thisbe, Elena Poet, Elena Esmeray and Elena Delphine, thanks Ashley. I will also take Elena Hyacinth and Elena Bellamy into consideration.
I am still open to new ideas though!
Thank you for reply @wintersage. Now I have quite a lot of name combinations but any input is still appreciated.
Elena Ilta ( ilta meaning evening)
Elena Mariposa (mariposa butterfly)
Elena Soleil (soh-lay)
Elena Mindele (minn-deeh-leh)
Thank you @ammy! I really like Elena Ilta, Elena Soleil and Elena Melusine from your suggestions.
I'm really liking Florence lately... What about Elena Florence?