1) Specific:

I recall an unfinished (or abandoned) fic on AO3 that was about 20-25k long at the time I read it. IIRC, it was an A/B/O with an independent female!omega!Cas who worked at a store (or a gas station) and a non-jerk but raised "traditional alpha" Dean. At some point, Cas goes into heat at work, and for some reason Dean is the one on hand to take her home, and he chivalrously behaves himself, but once they get to Cas's place, she says she wants him to stay bc she confident and knows what she needs at the moment. The then-published text cut off soon after that.

I've been wanting to re-read it for ages, but can't seem to find it.

2) General:

Remember that broken nazi!Cas that our!Cas kills in Michael's AU world, in 13x22 Exodus? May be a long shot, but I'd really like to read fix-it/redemption fics for the poor guy. But I haven't seen any at all! What injustice.

The story I'm looking for was about Dean unexpectedly getting pregnant. He already had a lot on his plate with keeping Sam from scratching at that wall in his head. I think they decided to settle down in Sioux Fall.

I think they found out that the baby was a girl and decided to name her Mary. As they were out celebrating that they'd decided on a name, Dean went into labor at the restaurant. They started driving home (or to Bobby's), but things were progressing really fast and Sam had to pull over. Cas showed up, but decided that it was too late to move Dean, so he ended up giving birth in the Impala.

That's all I remember, plot wise. I know I read it on AO3 a couple of years ago and I think it was about ten chapters long. I can't find it anywhere and I'd really like to read it again. Please help!