[name_f]Bianka[/name_f] does have a touch of kick and flair – and it is a legitimate spelling, used in [name_m]German[/name_m], Poland, Slovakia, and Hungary 
so it is cool
Some similar ones…
[name_f]Petra[/name_f]
[name_f]Erika[/name_f]
[name_f]Annika[/name_f]
[name_f]Helenka[/name_f]
[name_f]Ingrida[/name_f]
[name_f]Rebeka[/name_f]