Put me in the 'Don't do it' camp. I really don't care for the name, and if she has a cousin named Pebbles? Nah. I much prefer
Willie,
Billie,
Minnie, or
Mina as a nickname for
Wilhelmina. Maybe Hilly would work, too? I don't know, anything but
Wilma. Alongside beautiful
Theodora, it just sounds dowdy and underwhelming.
Hmm. Your ideas are intriguing to me and I wish to subscribe to your newsletter.