Two of my faaavourite name. [name]Thora[/name] absolutely, but I think [name]Meena[/name] to [name]Minna[/name] is a little confusing. Maybe [name]Minnie[/name]?
They both work and I love [name]Wilhelmina[/name], but I would spell the nn as [name]Mina[/name] rather than [name]Minna[/name]. Great sib set as well.
I know [name]Minna[/name] is an accepted nickname for [name]Wilhelmina[/name], but [name]Mina[/name] always sounds better. Personally, I would use [name]Minna[/name] as the full name. [name]Thora[/name] for [name]Theodora[/name] makes perfect sense.