Lucy- like LLG and others said, you did AWESOME.
And I really echo what DriGuy said- this is a completely relatable and normal experience from my early days. Even a bit longer than 51 days!! I recall specific bouts of irrational and even angry and cry-worthy "things" people did or were or whatever that hurt me....processing the stuff you said like it would only hurt you to drink, and that it is OK- it's great, even- to do what you did, sit and drink coffee. I had to reframe stuff to realize that "doing nothing" was more than enough some days. Here at 3+ yr, what defines "doing nothing" for me is a little different, but some days that nothing is victory enough when I'm sober.
Keep going and sharing- we get it.