I love
Delphine with the nn Delphi. If you called her Delphi most of the time, the delfin thing might not be much of a problem. I like
Amandine. I would pronounce it a-MAN-deen, but I'm not sure how others would.
Delfine is way too close to Delfin to me, and I feel like
German speakers would more likely want to say del-FEEN-uh if they saw this spelling, but they would just accept
Delphine as a French name and know not to pronounce the "e" at the end.
I actually slightly prefer
Amanda over
Amandine, just because of variations in pronunciation with
Amandine. And I think
Amanda still has some class to it. It's much less dated than names like
Stephanie,
Danielle, and
Chelsea, in my mind. Though it's been having a spike of popularity, it has been regularly used in
America for a while and still has some class. It's like
Rebecca to me. It's just classic enough, that although the name seems slightly dated at the moment from a recent spike of popularity, it may turn out to be redeemable soon. Both names have just fallen out of the top one hundred. I'm personally hoping one day I'll be able to comfortably use Rebecca/Rebekah.