You aren't walking the path alone Tills, I know we are virtual friends but we are all following your journey with you and someone is here 24/7 due to time differences. Whenever you are feeling lost or alone, you have this place to fall back on.
I know it's not quite the same, it is what I will have to deal with as I negotiate all of this solo. I don't currently even have a disaproving friend I can call on so you have that over me! Plus, maybe she is just worried about you? She is letting you stay there to recouperate at least, that shows she does care about you.
I have been alone most of my adult life so am totally comfortable being solitary but I do find tackling this stuff solo is scary, that's totally normal, it does not mean that you are having real doubts. Once you are though this and pulling on those leggings bulge free for the first time you will know it's all been worth it. I dream constantly about the day I can do that.
This will be a wonderful thing, don't worry.
If your friend drops you in it you can always PM me Tills, maybe I can help. I'm sure there are other UK girls who could offer help if needed too.
You've got this.