The tambourine is distracting, it falls out of rhythm too much (but I get the idea of what you were trying to do - just needs to be tighter with more intent).
The piano is very low fi, which isn't bad, but perhaps slightly too low fi and sits too center. Even a tiny bit of stereo spread would help IMO.
Her vocals sit nicely with a nice chorusing/stereo pan effect to widen it. The vocals definitely carry this. Good song selection (I'm a QOTSA fan).