I like
Lavender.
Lavender nn? Depends how far you want to stretch it.
What about:
Val (Lav backwards), Ven, Vennie/Venny,
Vena or
Venka? Deri? Too close to
Terri?
nn can derive themselves really - it's like a girl called
Jayne that I know who gets Jaynis. You never know what will catch on.
My 45 PPs - names in profile