I think
Adeline is lovely and I don't hear anything like "out of line". For me, because I know how the names are related, I probably wouldn't use
Heidi and
Adeline for siblings but I don't think it's the end of the world for someone else to do so. Most of the population won't recognize anything other than similar sounds with the "d"s and long "i"s.
This message was edited 3/27/2015, 9:27 AM