Twin sister for Felix?

Writers' Corner
1

Hello again.
So, for this ‘story’ I’m helping a friend. We need a name for a female character, that fits with her twin brother, [name_m]Felix[/name_m]. She’s from Australia, but part Korean. (Her Korean name is my friends name: [name_f]Hye[/name_f] Neul.)
What should we call Felix’s sister?
First names, and middle names are needed!

[name_m]Felix[/name_m] and …

Thank you

2

[name_u]Holly[/name_u]
[name_f]Hannah[/name_f]
[name_f]Hellen[/name_f]
[name_f]Hallie[/name_f]
[name_f]Harriet[/name_f]

3

[name_u]Hazel[/name_u]