Okay, this is 78 years after breaking dawn and Jacob is dying. This is how Renesmee feels since she couldn't grow with him
Renesmee's POV
All I wanted at this moment was to have grown. I got the pleasure of growing for the first 8 years of my life, but then, like someone stealing a child's teddy bear, it was jerked from me, never to be seen again. And now, as I stood beside my dying Jacob, I wished for that even more. I wanted it more than anything. For I was frozen in time, at approximately 17 years of age, and there was nothing I could do. To any onlooker, I would look like a teenage girl beside her dying grandfather, not a 78-year-old woman beside her 95-year-old dying love. All I had wanted at first was for Jacob to be changed, but since vampire venom was poison to him, that wasn't possible.
So I stood by, like a handcuffed spectator, and watched my Jacob grow older and older. At first, after I accepted the fact that he would always grow, I tried to ignore it. But as time passed, Jacob grew older and older, and our PDA started to look more and more like a gold digger and a stupid old man. I would here people whisper things, and it got harder and harder. Now, as Jacob lay there, so feeble, so helpless, I would have traded everything; my wonderful parents, a great life, just to be dying with him. Jacob looked up at me with is sad eyes, and my already-wet-eyes started pouring even more.
"Don't cry, Darling," he said. "It'll be okay."
"No it won't," I sobbed. "I'll never heal! My heart will die with yours!" His dark eyes seemed to get even sadder. He coughed. It even sounded feeble.
"You'll survive," He said, "I'll always be with you." He then lifted is frail hand and placed it over my heart. "I'll always be with you," He repeated, "In here."
"I love you, Renesmee Carlie Black," he whispered. "I'll be with you forever."
"I love you, too," I choked out.
He coughed once more, and seemed to choke on it.
"I love you," he croaked. Then his feeble heart beat one final time, and then he was gone.