Are you sure that it is your cat doing it's business in the middle of her lawn. It could be some other animal, a dog or fox or something.
I'm only saying this as it is very unusual for a cat to poop in the middle of a lawn, they usually make for a flower bed so that they can scratch around and cover it up.
Ask her if she has specifically seen your cat doing the mess, as you don't think it is him.
She will probably lie anyway if she is a bit odd.
In any case, you can't stop cats wandering , that is what they do but if your neighbour wishes to deter your cat, you could suggest she gets a powerful water pistol and spray him with water when she sees him.
The only way to stop a cat coming into your garden is to be pro-active and stop it.
It is not illegal to let cats out to roam but it is illegal for your neighbour to shout abusive language at you.
Next time, record her and report her to the Police.
Do not let her intimidate you and upset you.
Thought this might amuse some of you!
Backseat Driver, Former PM Tony Blair Reckons The Triple-Lock...
Changing from a Manual car to an Automatic after driving manual for around 50 yrs
