"Worked with" for what?
Poor pitch. Poor timing. Not particularly interesting voice. Isn't getting the low notes well, so song is not really in her range. Timid. Nervous.
Like most people, I'm sure something could be made of her voice with singing lessons and practice, but is she a singer you'd record? No. She's certainly not a natural. But so what? Tell her (assuming it's not you, pretending...) to try something less wimpy ballad, with a bit of life in it, and to practice, and relax.
I have a general concern with people who post "Can I sing?" threads like this that they can't hear their pitch problems, and if they can't hear their pitch problems, how will they fix them?