I just recently started learning piano, and I actually found some things off musicnotes.com the other night if that helps you at all - there is some of her Fleetwood Mac work on there, but also some solo stuff - Stop Draggin' My Heart Around, Bella Donna, Edge of Seventeen, Talk to Me, Sorcerer, After the Glitter Fades...I didn't see Rock a Little, unfortunately. The music isn't free
and someone else might have pdf files of these things, but the prices aren't awful. I got the 'easy piano' version of Gypsy.