Litter after litter of kittens drowned or ran over by cars

This cat lives in a terrace house of a lady whose neighbour used to own her but couldn't be bothered to sterilise her, resulting in litter after litter of kittens. All of kittens either died from drowning in the drain or run over by cars. This lady couldn't stand it anymore and decided to get her to the vetto be sterilised.