Tuesday Weld was the "May Queen" in the Led Zep song.
"With a word she can get what she came for" is about when she, 17 years old, went to harrods and it was closed.
They rushed back to work, and opened the store just for her.
She was don McLean's GF, and she took him to a satanic ritual, hence the words
"And as the flames climbed high into the night
To light the sacrificial rite
I saw Satan laughing with delight"
Satan is Tuesday Weld