Do you recall a while back when I told you that a long term of living in the same house with someone you no longer love would be a disaster waiting to happen? Well, this is the kind of disaster. You should not give the silent treatment to a housemate. That is emotionally nasty. SHe should never poke at or especially EVEN COME CLOSE to poking someone with a needle. That's domestic violence. And if you were a woman and she was a man, you can bet there'd be a whole lot of people here telling you to run & get a restraining order against ehr and get her kicked out of the house for that. It's VERY wrong. But I think that the response of getting a restraining order for every stupid thing that people do that ends up with someone tripping over a chair, walking into a needle, bumping against a door that's being slammed... it's excessive.

This is an "I told you so", so that you understand WHY I said what I did back then and maybe you will be more motivated to get the separation moving forward. It doesn't matter how well-intentioned you are about being kind to her and not tossing her out onto the streets, the failure to do so has ended up with the two of you prodding & poking and living in high tension, giving each other the silent treatment and getting angry over stupid comments.

It's a recipe for disaster and I think you're lucky it was only a needle stick. If someone ever asks "should I stay around and pretend everything is OK before separating", make certain you remember this and let them know that for you, allowing things to linger after you made the final decision to split was not a good situation to live in.