I’m sorry to hear about all the trauma that you’ve been through
. In the nicest possible way, I think you need to speak to your therapist of how to deal with new friendships and continue seeking help.
But it seems to me that your expectations of a new friendship is different. Taking things slowly would be better and unlike a therapist, not everyone is equipped or trained to deal with it.
It’s not about playing “nicety nice” or being “silenced”. You asked if she preferred you stopped, and she was honest. Nobody is saying to “play nice”. The fact that you immediately assumed those things and now you want her to leave and are getting angry inside etc. I think you are projecting your thoughts and feelings on to your new friend and others.
It doesn’t mean that are being invalidated, you just need to take things slowly and accept that not everyone can and will be able to deal with everything you say. There are some who will be able to listen and there are some who won’t be.
It’s good that you are opening up, and you shouldn’t shut that door but your friend might not have been prepared to deal with this. And just as she was honest when you asked her if you should stop, you also can be honest and say when questions are asked about your childhood that the things you say might be triggering if she too has past trauma or she might not be ready to hear it.
Just another thing, your past doesn’t define you. You don’t have to talk about your childhood just for someone to get to know you and you also can say that you’re not comfortable to talk about it just yet.
And to be quite frank, sometimes it’s better to speak things through with a counsellor/therapist than a friend, whether old or new, or family member who might end up saying the wrong thing unintentionally because they’re not trained.
You clearly made friends with this person and she liked your company enough that she’s come to stay the weekend. You can be who you are and not have to “play nice”
You just have to be mentally prepared that some friends might not be good with listening to all those things and others might be, but that doesn’t mean that they don’t care if they’re not ready to listen to to you. There shouldn’t be conditions on friendships. You don’t need to define your friendship with your past relationships and trauma.
All in all, it might be your past memories and memories that are part of you because they are your experiences, but it shouldn’t invalidate you because the past you isn’t the present you so don’t let your past dictate your present or define you as a whole.