Sister name?

So we have a [name_f]Cira[/name_f] Novae and a [name_m]Gavin[/name_m] [name_m]Jacob[/name_m]. Any ideas for a first and middle name for their sister? We prefer a name that can have a nickname of [name_f]Ella[/name_f], but we can live without. We don’t like the names that are too long or formal sounding, and don’t like ones such as [name_f]Isabelle[/name_f].