I don't know how to deal with my friend Options

[funky_munky]

Since I've known my friend since grade 5, I trust her with a lot of stuff (including some of my family problems).
Once, I told her something that has to do with my brother and I told her specifically not to tell anyone and she promised she wont. Then, when we were sitting in a group just having a chat and a similar topic is brought up, my friend laughs about the problem I told her like it was some funny joke.
I pulled her aside and told her to stop it and she goes "What? Its true."
What I want her to know is that, yeah its true but have you ever consider my feelings? I try to tell her that but she doesn't get it.
Then when I mention the times she's said it, she turns hostile.
Everytime I tell her something about her that bothers me, she immediatly denies it without letting me finish and turns really unfriendly.
Like, she would started questioning me "When did I do that?"

Help me out here, I can't think of a way to get her to understand that what she's doing is annoying and rude.
I've told her to her face but that just led to an argument and my other friend told me not to be so blunt but... I dunno... I need some advice.

**sorry if this is confusing

[Hiphop d[-_-]b]

i have a friend like that.
record yourself together, thats what im going to do. because she treats me really wrong, and doesnt even think she does. she'll tell me to die, tell me to "shut the f**k up" and say "what the hell is WRONG with you" on my choices and opinions.

just record yourselves, sit her down when your alone and tell her to just shutup and listen. if she doesnt like it.. then seriously you shouldnt be telling her things if shes going to be laughing and bringing it up when you told her not to.