I like [name_f]Elena[/name_f] best – simple and sleek. I think [name_f]Elena[/name_f] ‘Lainey’ works fine (a bit like [name_m]Christopher[/name_m] → [name_m]Kit[/name_m] or [name_f]Amelia[/name_f] → [name_f]Milly[/name_f]) but if I didn’t use that, I’d go with [name_f]Elaina[/name_f]