[katex]

I like any of the following (that is, if you insist on a German name) :-

Agna.
Bindy.
Elice.
Elsa.
Freja.
Fritzi.
Gertie.
Klara.
Liesl.
Lotte.
Mitzi.
Senta.

I quite like Bindy, Fritzi, Gertie, Mitzi or Senta myself. Think I would probably go for Gertie.