Fair enough.
If you have those thoughts than leave it with her to sort out. She could possibly refi it to a lower rate (I don't know how car finance works).
Cheers
Jamie
Do you have a home loan?
If so, and depending on LVR, you might be able to set up a $10k split and take advantage of home loan rates. Just make sure you set up a short loan term of smash the repayments.
Cheers
Jamie