The sound quality is good.
The song is REALLY boring. I'm not a lyricist so I dont judge lyrics, but musically its the same thing over and over. Anything you can do to remedy that would be appreciated, at least by me.

Lead guitar licks when she stops singing, organ licks, more drum fills, deeper textures a la synth beds, a mid section with solos and a different KEY

, anything.
If she wants this type of utilitarian sound, then I guess you just call it a day. I know that a lot of singer-songwriter types do. Thats too bad.

Her voice is ok but she cant deal with the click, she's all over the map and never in the groove.
As far as what you did, its a very pro job and assumedly exactly what the client wants.

The goal is to please the client, and its her call.