Thanks all! I did not expect a lot of Kia recommendations, but I did check out the Soul and Rondo. I'm not a huge fan of getting a car that's discontinued in the US (the Rondo) for parts/serviceability, and I think the Soul is probably too "boxy" for my mom, but I'll run it by her. The 2010-ish CR-Vs I'm seeing are around $13k so I might still be leaning that way: a brand I know (and my mom knows) and trust, still sold in the US, and at least slightly better gas mileage.
Also, I did check out the car jack - that is a great idea! But my mom has very little upper body strength and refuses to work out in any way (I've tried), so I don't think that will work for her either.