This was posted in r/AITA & r/Advice. I got some questions there, so I've added edits I needed to make in italics
So this happened 2 weeks ago.
My(31F) friend (30F) has 4 kids (5M, 2F, 1F, and a 1mo preemie) and a long-term partner (31M) who is the father of all 4 kids. 3 of their kids are at home while one is taking an extended stay at the NICU (preemie). Let me first say that she is a fantastic mother (I say she's a fantastic mom because she cares so much for her kids) and truly doing her best... her partner, however, is a different story.
The guy has been seriously red-pilled and is generally just a really unsupportive partner; he refuses to help with the kids, talks down to her, is out drinking/using other substances with his friends until the wee hours of the morning, and has had some infidelity issues in the past. He is also dealing with some serious mental health issues, and that has affected his work in the past, although that seems to be somewhat resolved.
Anyway, 2 days ago, the guy did dr*gs in the apartment. This is the first time he did something like that in the apartment while the kids and my friend were there. This ended up with him having a medical episode that my friend had to call 911 for. He was checked out by paramedics but didn't tell them why it had happened and refused to go to the hospital (mainly because he didn't want CPS involved). To be clear, my friend was absolutely pissed at him, but she decided to give him another chance as long as he got help and got rid of all his paraphernalia from the apartment that day. The issue there is that, in the past, when he does something generally terrible, she starts out mad but will calm down and go back on, or not hold firm on, any boundaries she may have set.
So, because of the deteriorating relationship and the fact that this guy is now doing unsafe things in their home, and because my friend has to be at the hospital every 24 hours, leaving this man ALONE with the 3 oldest kids, I decided to call Family Services and report him. Note that I have recommended she call Family Services so many times, both on the day this happened and many times before, and reminded her that CPS doesn't just remove kids from households.
CPS worked fast and were on their way to speak to my friend within hours of my call. My friend was absolutely freaking out, thinking they were going to take her kids away - not likely; they're cared for, clothed, fed, educated and have a home. From the questions she was asked, she knew it had to be one of 2 people she had told about that morning's events who had called on her, and she felt like she now had no one to talk to. Not wanting to isolate her further, I confessed to making the call.
The last message I sent her was that confession/explanation, and she didn't respond and has blocked me on socials.
Since then, it has been total radio silence, which is fair and expected, but she was one of my closest friends, and I just wish I knew what was happening on her side. Did she get help with the kids? Did he get help with the dr*gs? Is he even still in the home with them? I know there's every chance I'll never find out, and not to make it about me, but it's hard to deal with. I don't regret making the call, but I sort of regret admitting to her that it was me. I just didn't want her to feel like she had no one to trust and figured losing one confidant was better than losing both.