Thanks for the help Berries!
[name]Natalie[/name] [name]Elena[/name] is a combo I’ve had for a while, perhap they like that?
Also: [name]Victoria[/name] [name]Elena[/name], [name]Jasmine[/name] [name]Elena[/name], [name]Hanna[/name] [name]Elena[/name], [name]Bridget[/name] [name]Elena[/name], [name]Charlotte[/name] [name]Elena[/name].
[name]Elena[/name] is a beautiful name! Are they set on using it as a middle? Because it would make a really nice first too. 
Some ideas:
[name]Ingrid[/name] [name]Elena[/name]
[name]Willow[/name] [name]Elena[/name]
[name]Laurel[/name] [name]Elena[/name]
[name]Paige[/name] [name]Elena[/name]
[name]Sophie[/name] [name]Elena[/name]
[name]Auden[/name] [name]Elena[/name]
[name]How[/name] unusual do they consider unusual? Here are some names that aren’t unusual, but aren’t too, too popular:
[name]Margaret[/name] [name]Elena[/name]
[name]Vivienne[/name] [name]Elena[/name] (to many e’s?)
[name]Nicolette[/name] [name]Elena[/name]
[name]Regan[/name] [name]Elena[/name]
[name]Bridget[/name] [name]Elena[/name]
Names that are somewhat more popular but still work well with [name]Elena[/name]:
[name]Abigail[/name] [name]Elena[/name]
[name]Kaitlin[/name] [name]Elena[/name]
Or are they going for more unique names, like [name]Winter[/name], [name]London[/name], etc?
[name]Iris[/name] [name]Elena[/name]
[name]Skye[/name] [name]Elena[/name]
[name]Violet[/name] [name]Elena[/name]
[name]Marguerite[/name] [name]Elena[/name]
[name]Astrid[/name] [name]Elena[/name]
[name]Ember[/name] [name]Elena[/name]
[name]Chloe[/name] [name]Elena[/name] (Not so unusual, but it flows really well.)
[name]Io[/name] [name]Elena[/name] (Eye-oh)
[name]Seraphine[/name] [name]Elena[/name]
[name]Lilibeth[/name] [name]Elena[/name]
It’s for a friend that recently died. If it weren’t for the fact that they’re are already and [name]Elaine[/name], [name]Elizabeth[/name], and [name]Elise[/name] in the family, they’d use it as a first name. They feel that it is just too close to them for them to use it as a first name.
They’re not into very old fashioned names, but they don’t want her to be dubbed [name]Kaitlin[/name] K. or [name]Katie[/name] K. her entire life. It doesn’t have to be super uncomon, but they don’t want her to have to go by her last name.
I love the idea of [name]Penelope[/name] [name]Elena[/name]! But that’s also because I’m a huge fan of The Beatles and it’d be a way to have [name]Penny[/name] [name]Lane[/name] as a nickname without being too obvious, haha.
I think although [name]Penelope[/name] has gotten recent attention because of [name]Kourtney[/name] Kardashian’s daughter(which has led some to take the name off of their lists),but it’s still familiar yet relatively uncommon.
[name]Gwyneth[/name] [name]Elena[/name]
[name]Blythe[/name] [name]Elena[/name]
[name]Florence[/name] [name]Elena[/name]
[name]Celeste[/name] [name]Elena[/name]
[name]Ashling[/name] [name]Elena[/name]
[name]Judith[/name] [name]Elena[/name]
[name]Margot[/name] [name]Elena[/name]
[name]Tamsin[/name] [name]Elena[/name]
[name]Juno[/name] [name]Elena[/name]
[name]June[/name] [name]Elena[/name]
[name]Simone[/name] [name]Elena[/name]
[name]Arwen[/name] [name]Elena[/name]
[name]Arden[/name] [name]Elena[/name]
[name]Temperance[/name] [name]Elena[/name]