What about Celie or
Lia? I could see those being "sometimes" nicknames. However, it's certainly possible that your daughter will hate
Cecilia and chose to go by
Lia,
Celia,
Cecily, or even her middle name.
I prefer
Miriam Judith and
Cecilia Rose to
Judith Cecilia, which is a bit of overkill. I don't think
Judith needs a nickname, and I hate
Judy and
Jude.