OK, let a prospective chemist at this problem.

you can always put sugar in her gas tank, tried and true partizan method, engine will not start.

putting a hotter burning fuel in her tank, such as kerosene, will cause the car to sound like a machinegun and eventually destroy the engine.

if you can aquire some, put tertaethyl lead in her tank, it will utterly destroy teh catalytic converter.

of course there are always various things you can do with epoxy around hr car or office.

and remember to watch all Police Academy movies, some of the stuff they did to Harris and Mauser could work evil:



oh and Ktog, gg uberspamstein