Hello my name is ***** ***** I will help you with this.
Is it a shared boundary line?
Thanks. Yes you can dig them up, its a shared boundary line. She can not put anything there without your consent. She did not get this.
Therefore you can dig them up and put them on the lawn. She may try and say this is criminal damage, but it is not. Criminal damage is where you do NOT have a lawful excuse. Here you do, its a shared boundary.
Can I clarify anything for you about this today please?Alex
If this answers your question could I invite you to rate my answer before you go today, otherwise the site doesn’t pay me for the time spent with you. Thanks in advance! Alex