Silver Girl is about Sheryl Crow

[Gypsy-Rhiannon]

From uncut mag:

In the absence of Christine McVie's sisterly support, Nicks recruited bosom friend Sheryl Crow to guest on two of the new songs, "Silver Girl" and the title track.
"I penned "Silver Girl" about Sheryl," she says. "It's an ode to a lady rock star who's always on the road and has a very hard time having relationships and settling down. So it's also totally about me."

It also says Stevie has hurt her hip ... ok I have to transcribe at least the beginning of this article

Pip