Ask an Property Solicitor. Get an Answer ASAP.
If after speaking with them they deliberately put paint on the walls and conservatory then that is criminal damage and you can report that to the police .
Yes you can tell her to stop and sue is committing damage to your property.
Send them an official “ cease and desist letter” This demands they stop their harassment and damage to your property, put right any damage cUsed by them and to stop any further harassment, failure to do so would result in legal action against t(em.
You can certainly have a solicitor do this Or you can send the letter yourself.
It is best coming from a solicitor on headed paper.
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