Definately 2 quarts of oil.
If an automatic, also a quart of tranny fluid.
If a manual, (or if your transmission fluid is NOT an acceptable alternative for power steering fluid), a pint of power steering fluid.
Roll of duct tape, tube of "Krazy Glue", tube of "JB Weld" - ( for emergency repairs of oil, tranny pan, gas tank, and radiator)
1 gallon pre-mixed 50/50 water and antifreeze - (storebought, or make your own...) 1 gallon "bug juice" for squirter.
hose splices appropriately sized for your heater and radiator hoses. Sharp boxcutter knife, extra hose clamps, screwdriver.
Transmission fluid funnel (can be used for oil & power steering fluid too, ) and a regular funnel.
1 can "infalte-a-tire" sealant.
MAKE SURE SHE KNOWS:
If all the oil leaks out, but the leak is temporarily or permanently fixed, she can dump the oil, the tranny fluid (10w oil with die), and power steering fluid (same as tranny fluid but no die) into the sump and drive home only 1/2 quart low without huritng anything.
In the event of a coolant leak, she can put plain water, and the "bug juice" as well in, if needed to make it home - so long as the fluid is drained and real antifreeze is put in right away.
spare fuses, bulbs, belts, fuel filter, etc.