@JazzysMom:
I've never really "gotten" having the call name and registered name be so different.
Nicky named himself which is why his call name and registered name match.
I picked Rally's call name long before she ever born, 12 months or more. The theme for her litter was Moon to go with her mom's name Sherwood's Red Moon Rising, "Luna". So we picked the registered name to match the theme and kept the call name.
With Rio, her registered name was picked long before she was born. When it came to her call name, we decided that rather than match call name to registered name that we would name her after an Anime character since that is how found Rally's name, that way we would have a link between mom and daughter. Just like Rally's registered name links her to her mom even if our link is only known to us.
With Sophie, her call name is from an Anime and her registered name is from the same book series as we got Rio's registered name so there is a method to our madness even it only makes sense to me and my husband.