Have you ever screwed someone's life up in trials to HELP? how to make it up?

My sister had a big problem in establishing her career because of favoritism and nepotism in a whole rotten system, she tried everything in vain and finally was told this won't be solved unless a media propaganda was made about that spoiled system and their illegal ways.

I asked her to write me the details of the problem and let me send them to whoever I can but she was too busy.

I wrote a letter myself about the problem and sent it to the owners of a yahoo group (more like an online newspaper with too many subscribers) explaining the details and asking them to help us get to the media.

They offered immediate help but also PUBLISHED my letter!!! which contained A LOT about our identity, and also identity of big shots involved in the problem!!! more to the shock, it also turned out to contain many mistakes in the story details since I'm not the direct source!!! :'(

My sister had a meltdown, she's too scared now since she could REALLY get hurt because of this, she doesn't wanna see my face again and not on talking terms with me at the moment.

Was I wrong to interfere from the start? how can I make it up to her or even get her to listen? how can we help now that what's done is done??!! I need immediate response please.