Ginah - Yes, your dream was reflecting what you were feeling, but it might not be an accurate picture if what you friend was feeling.
We tend to take things personally - and that might be true - but there might be other reasons. For example when someone is deeply depressed or emotionally hurt they tend to shut down, can't speak or react warmly.
So I think if possible you should keep in mind yourself feeling beautiful in the peach dress and ask her if she is okay. Don't do it in a confrontational way; but if it turns out to be about you, ask her as a friend what she feels you had done to upset her.
Tony