Help with narcissistic stalker (grey rock methodl

[SomethingUnusual]

Long story short, all started in 2020 my brothers now ex gf she was 16 was copying my photos online, felt it was strange since she was with my brother and yes we all thought it was harmless. However her obsession developed rapidly. She started tracking down clothes I'd bought and when I took photos of them online, literally a day later she would pose in them the exact same way! I asked her to stop, she denied it then started all these accusations saying I threatened her etc etc all proved false. (We know she's lies because she has about her family before)

Then I sadly lost a pregnancy in 2021 and my social media is private for my child's safety, however a miscarriage awareness account suddenly attempted to follow me. This account was new and had zero followers. I told my family and they said ignore it.
We found accounts of her pretending to be my daughters parent online. When confronted the accounts disappeared. My brother couldn't get on his social media because his phone wouldn't allow it however his account tried to add me (we weren't and still not talking about of her) when I showed him the proof (I didn't accept because I knew it was her) he threw up and said its her! She has his account! Then I stream games online as suddenly she streams games online, when I changed my name she happened to change her name to similar! Denied it all even with all the proof, she's still copying all my photos online but has the audacity to say I'm stalking her and she's the victim. All the photos are time stamped so can prove its the other way around but she doesn't care she just keeps lying.

Then sadly I had another miscarriage in 2022 and a week later she happened to have one aswell 🤦‍♀️ but I've grey rocked her for over a year and she went silent for a few months realising she isn't getting any attention. But this week she's came back with a bang on a smear campaign again for no reason! Sending people over to hate on me 🤦‍♀️ and yes all this has been reported to the police they have said until she messages me 1 more time they cannot say its harrassment because its online although she knows where I live, knows my daughter and also tried to dox me online.

At my wits end.
Please help.

Oh and we planted a fake tattoo online saying I was getting a snake tattoo within the hr she posted I copied her and it was her idea first etc etc then proceeded to buy fake tattoo online pretending to get it 🤣

First of all get off social media. Nothing needs to go online. Delete all your accounts.
Stop telling your brother about anything.
And perhaps a Cease and Desist letter from a solicitor (or even a formal sounding letter) to warn her that you will pursue harassment charges if she doesn't stop her weirdness.
She is obviously very young - could you contact her parents?

Sadly her parents don't seem to care and only see her side which I completely understand. She Will laugh at any letter wrote and then pretend she's got a letter and sent it to me etc it's like a cat and mouse with her. All social media is private and I accept no one just for my daughters safety and mainly so she sees nothing. I just don't understand the obsession with her I'm nothing worth stalking and getting into trouble for.

Is she just targeting you, or is she doing this to other people as well? You might find that she has infiltrated the wider family and numerous friends online too.

At the beginning of her obsession she was calling herself hannah Baker and dressing her like but also doing the unaliving stuff aswell the first time I ever heard of her she was telling my brother through texts if he ever left her she would end her life!

We believe during her break from me we think she morphed into someone else because her style has changed how she's done her make up and pictures etc, but now bounced back to me and went back to my style. So maybe that person didn't give her any sort of attention and she got bored?