To: I told my friend about my problem but then she exposed on Twitter
Me: Twitter – nothing you can do, but if Twitter does not publish your name and address, then anyone who contacts you, does so as a potential friend and it is up to you if you accept them and how much they find out about you – it was a kind gesture and well intended, even if it did not work out that way for you.
Choose somebody else as your friend who will keep confidences between you and not blurt them out over the internet, for all to read and see!!