Desperately needing Advice

Okay my friend and I have known eachother since we were 12 and now we’re 24 and we both have kids I’m super close to her family but she’s been keeping a dangerous secret from her family and friends her boyfriend is really abusive to her and he does it sometimes in front of their child! Now that I am a parent I feel like she should tell her parents and I feel horrible because if this was my child I would really want someone to tell me and I really want to tell her mom and dad because it’s not okay I grew up In abusive home and it messed me and my siblings up so idk what to do because I feel like it would ruin our friendship but at the same time it’s a dangerous situation