Your dream about your sister is fascinating to me, and it's amazing that she would come to tell you like that..
My only reoccurring dream was driving up on a very tall bridge, and it fall down. This dream had only left me breathless, chest pounding and woke up in sweat..Thank God, it is over!
Yeah I never understood why she came to me. I assume she told me stuff I might need to know on a subconscious level...
Omg, that would be a terrible dream. I'm glad you don't have it anymore.