What's Going on in My Apartment?

One day, i happened to come home at the lunch hour and i came in through the back door of the apartment. And it was mostly the higher pitched voice that day. It sounded like someone was geting the shop beat out of them. I immediately pulled out my sel phone and i dialed nine one one. But i had to know. At that point, just standing outside of her door, looking at her door, i could hear it. And i knocked really hard on the door and said, hey, hey, what's going on in there? As i yelled and knocked. And the noises met each other, and there was no more noise. And she opened the door