I told her there might be problems if she followed through.
Why would you threaten her like that?
She wanted to seduce me and I was afraid she would ruin her reputation.
It is good to help other people avoid a problem. You should not put yourself down to save some one else.
I have to remain self-centered.
I think that it is noble that you wanted to help avoid problems. I think that there are nicer ways to go about it though.