Vault 76 has 'Programs' that everyone is issued and must follow for the good of the vault. Many of these 'Programs' are sexual in nature, but residents opt into them willingly. Samantha opts in, wanting to be an asset to the vault. This leads her down a path she never imagined, taking every wrong turn possible. Some points in this story jump between scenes rapidly, hopefully they aren't too bad to follow along with :)
When Simon goes to get a glass of water at night, he notices the door to his mother's bedroom to be ajar and strange noises coming from her room. Just to make sure everything is okay, Simon decides to take a peek.
What he sees then will change his life forever.
"What the hell happened?" Sally had come home with one hell of a shiner. I exact some revenge on her soon to be ex-husband. Not much later she gives me a son.