Crystal crystal: pure water; Crystal.
Dilys Dilys: reliable; Loyalty; Sincerity.
Faith, faith, faith: faithful and trustworthy; Trust, faith.
Fay, faye faye: faithful; Fairy.
If you don't like it, you can tell me your other requirements and I can help you find something else.
The name I gave you is the name of the diary. Just like Het Achterhuis, I regard my diary as a friend, tell my close friend what I am worried about and give her a name. So I gave you some loyal names. Here are some names that I think sound good:
Annabel Annabel: Kindness; Beautiful; Very cute.
April, April; Spring is back.
Beryl: Emerald.
Charlotte: The name of a Norwegian princess.
Elizabeth Elizabeth: God's oath.
Eve: Life.
Fiona: Beautiful.
Ingrid: Daughter.
Isabel Chabert. Jessica: God's grace; Wealth.
Joyce Joyce Joyce Joyce. Liu Ye: Lydia.