Hello, welcome to the website. My name isXXXXX can assist you with this.
Who has accused you of doing this?
my future mother in law just need to know where i stand as i have done nothing wrong
Well, if you've not threatened her, then you've done nothing wrong.
She would always have to prove that you had threatened her.
If it didn't happen and nobody else says it did, then you should be fine.
even if she has called the police and said i had threatened her
The police and courts work on the basis of evidence, not a simple assertion that something happened. The police might speak with you to investigate, but that's not the same as being charged with anything.
ok thanks i havent been charged with anything i just want to know if there is anything i can do to prevent this happening again even when i have done nothing wrong
Not really, she can always make allegations, the only way you can really avoid it is keep away from her and have nothing to do with her.
i can try but bit tricky as my girlfriend still lives with her