Had a dream I saved my dad from suicide. What does this mean?

My dad and I have a terrible relationship. I hate him because of a couple of significant things he has done to my family that has ripped our home life apart (twice). I could never really understand why he did the things he chose to do knowing that it was going to tear our family apart. But I had a dream last night that I was sitting on a dock talking to a friend and out of no where my dad came running over but discarded the people around him. He turned with his back facing the water and just fell in the water on purpose. And he did it so quickly like he didn't want anyone to see he truly wanted to drown. And I jumped in the water and swam around the bottom until I found him and pulled him back up to the dock. When my family (the rest of my family has maintained a somewhat healthy relationship with him) were at the hospital with him, I was still under the dock swimming under water trying to untangle this rope but it kept getting tangled and it was a constant struggle. When icame out of the water an checked my cell phone to see if any one from my family had contacted me to keep me updated with his condition, I found that nobody had said anything to me or tried to call me. I was furious by this and called my step mom and I was yelling at her And crying saying that they should have called me to tell me how he was doing. I don't undersand.when I say my dad and I hate each other, I mean we absolutely hate each other. So why did I have this dream. Sorry about the long post but any feedback would be appreciated