This is the alternative 'Cas healing Natalie scene.

He concentrated for a moment and soon a glow emitted from his palm. Dean waited anxiously as the glow faded. When she didn't stir, he turned towards the Angel.

"I have healed her completely, Dean. There is nothing more I can do."

As Cas finished his sentence, Natalie coughed and opened her eyes. A tired grin stole over her lips as she looked at Cas.

"Knew you'd be here." she said. He glared at her.

"First off, of course I would be here. I protect the ones I care about. Second, that was incredibly stupid of you. What were Balthazar and Gabriel thinking sending you back here? You could have been killed! The child could have been killed." Cas said. Natalie looked at him, then down at her belly.

"They didn't know, Cas. I haven't told anyone in our time. How did you find out?"

"How did-. Natalie, you are pregnant with a half-angel child. It is my job to know. Not to mention the fact I know who the father is and that means extra eyes on you." he told her. Natalie gasped and looked up at him.

"Wait, you knew? How long? Why didn't you say anything? It's been three months!" she asked.

"I knew the third day. There were little changes about you. I wanted to wait until you were comfortable telling me. But, then the days stretched into weeks and then next thing I knew, Balthazar and Gabriel had sent you back here."

"What the hell is going on? You are obviously not the Castiel from this time, so what is going on?" Dean asked. Natalie looked up at him with guilty eyes.

"Meet the father of your grandchild." she said softly. Dean stared at her before lunging towards the future Castiel.

"You got my daughter pregnant? What the hell were you thinking? She could be in danger because if this!" he shouted.

"You think I don't know that? Why do you think I assigned Gabriel and Balthazar to watch over her. Obviously they are more dense than I thought if they couldn't tell my fiancée was carrying my child! I never meant for her to come back here in the first place." The future Cas growled. The three from the present time stared with wide eyes at the confrontation happening in front of them.

"Cas, it's getting close to the time I have to return. We need to leave. And where is the past you?" Natalie said. Future Cas turned o her with a sheepish expression.

"I may have managed to still get myself stuck in Lucifer's trap. Currently, I'm still there." he muttered. Natalie rolled her eyes.

"Even after I told you about it?" she asked.

"In my defense, I had just learned I was a father to be. You can't blame me for being distracted. Now, we really must get going," he said, turning to Dean, "When my past self finally makes it here, tell him everything is fine. All you will remember is that I came to save Natalie and bring her back to her timeline. You won't remember she is your daughter, nor remember the child."

Dean nodded and looked over at Natalie.

"Goodbye." she whispered as she and Cas disappeared out if sight.

So, yeah. I loved this at first, then I hated it and decide to scrap it. I like my final ending better than this one.