What does one make of this?

When the new working committee for our Cooperative Housing Society was elected a member, a female resident, complained that there were too many women in the Working Committee, she said they will find it very difficult to 'manage'.
"Why?"I asked very conversationally.
"If there is a problem late at night what will they do?" She said.

So last evening, I had just finished brushing my teeth before going to bed, when I heard a woman scream. Daughter came running, looking terrified, Son ran to my room after her, "What was that?" Husband was away. Another scream. What's happening? We rushed to the window in the direction from where it seemed to be coming.
So many windows, some lit, some dark. And then a balcony door opened a man came out, and looked here and there. He too had heard the screams? Why weren't the other residents rushing out? It was only 10 30 pm...was everybody asleep? Or maybe watching the News. TV deadens outside sounds. Another piercing shriek.
What does one do? Somebody was screaming, she needed help... She could be dying right now? So I yelled in general direction, "Sentry, yeh awaaz kahan se aa rahee hai, check karo...sentry...(more urgent) SENTRY!" (Sentry check where this noise is coming from). A window opened, "It's coming from **** ". Another window somewhere, "It came yesterday also!", and then the man in the balcony, "We rang their door bell yesterday, nobody opened the door."
Was it the right door bell? Oh my God what's going on...More screams. I saw a sentry walking in that direction.

I called the Society Secretary. There was NO hesitation, she asked "Are you prepared to come there right now? " I changed quickly, picked a torch and cellphone, and ran.

We made the sentries wait outside.
No robbers or dacoits had broken into the house. Just a young couple. Both working. (Software engineers). The husband said they were both short tempered and they were just fighting, and giving wife a dirty look, added that she has a habit of screaming too loudly, and no, there was no violence.
I had heard her scream, "you cannot hit me!" just moments before we rushed there. What was that, I asked. She agreed there was violence but she also hit him back. We told her how her screams were heard earlier also. Just screams, no words. Husband looked angrily at her and told her all this embarrassment was a result of her loud screaming. But why would she just keep screaming if they were fighting, won't she say something or yell?

I was thinking, "Will he gag her before he beats her next time so we don't hear her scream? IF he was hitting her."
We gave some ML (Moral Lectures), warned them, ('Next time somebody might call the police.') I made sure I told them that now it was a crime to hit to your spouse... But the fact is we have NO IDEA exactly what as going on. I just hope he was not hitting her...was he?

What do you think should we do...what CAN we do? Is this something we should be worried about?