Both our names are on the car title but it was purchased with Mom's money while living at home, I do all the driving. Can I keep her car?

For insurance bundling purposes, Mom and I put both our names on titles of both our old cars. We're thinking about buying a better car as part of her Medicaid spend down (and turning in both our old cars). It will likely be our only opportunity to have a decent, reliable car.

She can't put my name on the title if she spends her money, or it becomes a 'gift' in terms of Medicaid look-back laws. As long as she lives at home, I do all the driving. When she has to move to a nursing home (or ADF) where transportaion is provided, do I lose the car? Does she have to sell it to help pay back long-term care expenses. Maybe buying a car is a bad way to use her money? If I use the car to take her places some of the time, can I still keep it? We live in WA state.