worried after telling off friends abusive bf

So I'm freaked out. my friend's abusive boyfriend was acting like get to me in text and I could tell it wasn't her ("she" was asking me for money) and asked her to verify it was her. then he made it obvious it was him by cussing me out, calling me a fat fuck and all this evil shit. so I told him to stop beating his girlfriend, that he was an abusive psychopath trying to get his girlfriend addicted to heroin. after that he tries to argue it wasn't like that with more insults and I told him not to talk to me and blocked him. I felt so good afterwards then realized he probably beat the shit out of her for what I said. this morning super early she texts me saying how could I tell him what she told me and I apologized. I felt good for standing up to him but I think it backfired. I don't care so much she's mad as much as that what I said likely got the shit beat put of her. I'm so guilty and worried