A Harlem Tragedy by O. Henry (aka William Sydney Porter, Audio Shake in American English Language)

Beginning of the story:
Harlem.
Mrs. Fink had dropped into Mrs. Cassidy's flat one flight below.
"Ain't it a beaut?" said Mrs. Cassidy.
She turned her face proudly for her friend Mrs. Fink to see. One eye was nearly closed, with a great, greenish-purple bruise around it. Her lip was cut and bleeding a little and there were red finger-marks on each side of her neck...

[@adityaraddi2196]

Mam can you plz tell me the outside summarizes of this story Because I've read this story 3 times But I didn't understand Because I am indian. I'm a student and studing in B.A 2nd year. And this story has mentioned for our syllabus and am poor in english literature. so plz Kindly help me to feel understand properly by your simple words..