1) Cooper CS5 Ultra Touring is about $120 a tire, buddy that was stationed in FL needed a cheap set of tires and put them on his Avalon XLE per my recommendation and was very happy with them. Great for mild to moderate driver, excellent grip in dry and wet but they don't corner like a summer tire.
2) BF Goorich G Force Comp2 A/S about $150 a tire and are for more aggressive drivers wanting last gen Michi Pilot A/S grip on the cheap. I'm running them on my G37x and love them. They are only rated at 45k but I'm at 25k now with 60%+ remaining. They are tenacious cornering but will still allow for significant throttle steer if you have the power and suspension setup which is great for well tuned independent suspension cars, but not necessarily a + if she is a more conservative driver with a live rear axle mustang. Downsides are road noise and ice, they don't do ice or deep slush very well.
3) BF Goorich Advantage T/A Sport about $170 a tire, Grips better then the Cooper in corners, handles wet and dry just as well. More water/slush clearing depth and is much quieter. Folks have them on their Avalon and like them better then factory Michi MXM4's for what that's worth.
Personally I'd go for the Advantage T/A Sport, they are the best balanced tire for most drivers and conditions.