It has been a few days. Though I wish to share to you all how it is dealt with. I know many has told me to reach out on various social media and I am currently looking for ways to do that too. Because this is honestly insane to me.
Firstly: no, the stalker has not let up. She constantly follows me no matter if I RP in Stormwind or outside like Duskwood, Redridge, Ironforge or any other zone I have tried. I have, of course, made myself untrackable on the TRP addon.
I am also going to take the advice of someone and name them so that more people can share their stories or at least know they are not alone. One of the accounts the stalker plays on has a character called Silanael. The trial she uses is Bãnê.
In conclution I also wish to share the latest GM message I got. Basically affirming my fears that nothing will be done even when a player breaks against the ToS. Why? Because we are physically unable to provide proof and the GM’s will not do anything about it. Since there is no “text” or us as players unable to provide screenshots or have a GM that could be like “stand by” or something they will never be able to catch them in the act. Which, to be quite blunt, is extremely terrible.
Here is the letter from yet another GM:
Greetings Fredrik,
This is Game Master Nomilocoel, thank you for contacting Blizzard Entertainment, and for your patience with our wait time. 
I understand from your ticket that you’d like to report another player.
Rest assured that I have completely understood your issue and I will be working on a resolution that meets your expectations.
Kindly note that while we truly sympathize with your predicament, regrettably, we Game Masters are unable to take screenshots to be the main reason to applay a penalty. Please note that I will investigate and action your report appropriately. Please note that I am unable to discuss exactly what that looks like and what actions may be taken in a specific circumstance.
Should you have any other questions or inquires, please feel free to contact us anytime, day or night. 
Happy Gaming!
GM Nomilocoel
(っ◕‿◕)っ☆ﾟ.*･｡ﾟ