Im really mad n confused!?

basically im posting this question cause im super mad n confused, n i just need some feedback from some one, i had this old friend of mine, who added me on my facebook, we were so good together talking everyday nice through facebook, but honest i really didnt remember her much, so i remembered an story of me n her in high school, i said the story to her n i asked her did i got her right! n she got pissed at me, saying ur joke is not funny!!! n i was like which joke?? n she got mad n removed me from her page!!!!!! n said things like I CANT BELIEVE U SAID THAT!!! n i still dont know what is she talking about!!!!! im just so offended by her reaction....n the story was about a news that year came out about a mother killing her 2 children n she told me that story in the class,n she said her mother can not kill her n her sisters n bros for some reason related to the story,(in funny way as a joke) so i repeated it for her to confirm if its her or not..... someone tell me what i have done wrong!!!