Pictured with Ledger behind her head. [usual symbolism below, black/white duality stripes, leopard-print, ruby slippers, one eye/half face covered etc]
She was in the film 'Russian Dolls' [compartmentalization symbolism with the varying sized squares] with Cocobot Audrey Tautou (some symbolic images of her here), the fact that Lucy died in her Paris apartment is more ritualistic/symbolic (the Paris location; Eiffel tower etc). Obviously her most famous role is Spider-Man 3, added in a couple of MK symbolic + duality (mirror, good/evil, polarizing personalities and whatnot) posters below.
I dug up a screen capture of her in it too; she's reporting for channel 8 (8 = chain symbolism/interlocking/connected rings; also infinite symbol on it's side factors in here [kept forever in chains/cuffs; only escape is self-destruction]), holding her microphone (phallic symbolism). She plays reporter Jennifer Dugan who is reporting on the fight between Spiderman and the Sandman (incredibly MK symbolic villain, see this post for lots more on the sandman and how it factors into programming [but obviously you can get the jist from it's wiki [puts little children to sleep and makes them dream by sprinkling sand into their eyes]). Her line (she probably had more, I'm not a spiderman fan at all; they're all clichéd pieces of crap) went: "It's hard to believe what's happening. The brutality of it. I-- I don't know how he can take anymore."... She could take no more in reality (of the metaphorical sandman messing with her head).
Spider-Man erupts white sticky stuff (spider web; itself very MK symbolic) when making the upside down 'horned-one' hand signal, below one of the people from the film 'Frost' is doing it just about the right way over her head (it is a commonly used hand signal trigger [usually with the two extended fingers pointed directly at the victim's eyes]).
Her last symbolic role before her death was playing Jane Birkin (pictured above with chained dog), an actress/model/singer who was the daughter of a WW2 British Intelligence officer.
[May edit this if I come across more on Lucy (tips welcomed)]