You can definitely see her time around Sophia Coppola influenced her. These songs sound like the The Cocteau Twins and Sophia Coppola had a lovechild.
Personally, I don't think she has a strong voice at all. She is a great actress and tha hotness, but not a singer.
I just question if this is one of those situations were everyone around her turned into a "yes" man. You know, heavy on the "yes", light on the honesty.