Looking for a brother in law and sister in law story.

In this story the brother in law is in love with his sister in law.

In the first chapter they have sex and she gets pregnant with their daughter.

In the second chapter it takes place one year after the birth of the daughter.

I think the one you're looking for is actually a 3 part story (I wish there were more)

It's https://www.literotica.com/s/dream-sister-in-law by 2becheatedon