Firstly, you must understand that time travel without the help of an angel hurts like hell and my cousins Adam and John completely opposed my idea of travelling into the past, they wanted to try win the war in our time as they had built lives. No matter what I said to them they would not budge.
"The past must stay the past. You have no idea what could happen if you go and mess with the past" John said sternly.
John was such a stubborn ass, even though I was two years older than him he still treated me like I was a child. These words didn't really matter a week later. John and Sam were killed trying to save a group of prisoners, it was a trap for them. The prisoners were beyond help, they beat my cousins to near death and then allowed their master to kill them. I found out it was same Langoran bastard that had killed my dad and uncle Dean. One moment was all it took to make the decision. The future was doomed and everyone around me knew it. We had heard that a group of resistance fighters had committed mass suicide a few towns over, they decided to take the easy way out. I scrounged around for any information on how to travel back to the past without the help of a junk less angel. I finally found one in one of Bobby's books, a rare alignment allowed for a brief hole in time that allowed travel to any moment at least that is what I think it said. It was in an ancient Latin that I could barely translate.
I packed everything I thought I would need including some of the prototype weapons we had developed to take the Langorans on with. I managed to pack a duffel with weapons ranging from silver knives to a blade that could kill an angel. Walking away from the compound was hard but I knew that if I could get to the right moment everything would change. The entrance to the hole was in the most leap of faith place ever. It was centered below San Francisco Bridge, the nearby city was crawling with zombie-like citizens, the resistance referred to it as a hot zone. I struggled to get to the bridge, I threw a energy grenade (something my cousin Adam had developed) and it cleared a route long enough for me to jump into the hole.
It was the most painful moment of my entire life. Everything of who I am was ripped apart and put back into place, one moment I was being ripped through time the next I was slamming into the middle of a road. The last thing I heard was the screech of tyres halting to a stop.
My mind was hazy when I first opened my eyes. My vision wouldn't return to normal as my head tossed from side to side. I panicked for a split second when a cold hand was placed on my sweat ridden forehead but I felt calmed when I heard a deep voice telling me everything was ok. The covers that hugged me were itchy and annoying but they kept my frail body warm so Idecided to be patient with them. My body burned and ached as I pulled myself up, my eyes had a private battle with the light but I finally willed them to open.
I almost stopped breathing. Before my eyes was my father looking tired but alive. He wasn't covered in blood as I remembered him from when I was eight.
"Is it really you?" I said looking at Sam then to Dean.
"I'm sorry. I don't think we've ever met" he said kindly.
The words stung before I realised he woud have no idea who I was, my mind was so foggy it was hard to piece together words. A familiar angel walked into view stared at me, he knew who I was I could tell by the realisation in his eyes.
"Cass care to fill in the gaps" Dean said as he walked over and sat on the bed opposite mine.
"I have no idea why she is here but I know her face. It was burned into my mind while in heaven. Sam this is your daughter Mary Deanna Winchester".
Sam turned and looked at me with shock. At that moment my barriers broke down and tears began to slide down my pale cheeks, I wiped them as they fell from my eyes.
"Hey Dad. Long time no see".