I don't know about girls raised by wolves except Julie of the Wolves, (not exactly raised) and Island of the Blue Dolphins. But really what idea is new? It's the execution that matters, right?...by the way, Ron, excellent use of the Ferris reference. That scene is a highlight in that movie.
There is a new book called The Incorrigable Children of Astor Place, or some such. It's very pretty.
A girl raised by wolves is not a new concept, but perhaps this author has a new twist? Like a girl raised by wolves who turns out to be a werewolf/zombie/lesbian/vampire, or she's a shape-shifter, or she falls in love and has human-wolf babies... oh, wait those ideas have already been done!
Picture books are out there about a real case of feral girls in India--When I Met the Wolf Girls by Deborah Noyes is one. Jane Yolen also has a book about them.
Fell by David Clement-Davies (the wolves raise a child; story from the wolves' pov)Victor: A Novel Based on the Life of the Savage of Aveyron by Mordecai Gerstein (he also wrote a PB called The Wild BoyRomulus and Remus, though I don't know of any contemporary retellings.Jennifer Lynn Barnes has a book coming out about a girl raised by werewolves, so Lisa is right on the mark!Karen Hesse wrote a story about a girl raised by dolphins before she wrote Out of the Dust.Hope this helps!