Forever Lost 3 - Ash and Feathers
"_ shooing off her children as they raced to the lakeshore, the sister-in-law sat herself down with a heavy sigh and looked towards moonclaw. _"so are you regretting being mated to this family yet?"
Hearts Set Afluttershy
I did indeed find sweetie belle to be adorable and likeable, and the thought of having her as a niece or even sister-in-law made me chuckle under my breath. but when i thought about her sister, rarity, i also thought about my five other friends.
The Cost of Life pt. 1 - Loyalty
Jeremy looked up to see his sister-in-law standing in the doorway ahead of them, smiling at the conversation he was having.
Episode 9A: Inquiry
"let's just say i'm your sister in law. i'm diane-kay." harry was a bit shocked. he didn't know what to say. it never seemed possible his brother could find a girlfriend, let alone a mate.
Pink Personal Hell and Altering Fate
"and then, john describes it as his sister in law's cousin's brother's niece's friend's roommate's brother's daughter." pinkie pie's mane fluffed back up again, "and then she says, 'you mean sally'?
Corruption
Looking instinctively in the direction of the voice, she saw cadance - her old foalsitter and new sister-in-law. she also saw her older brother and 'big brother best friend forever', shining armor, since he was currently on her back, thrusting roughly.
Toxic Love
The door closed behind her, leaving me contained in my room with twilight, her brother, and her sister-in-law.
Stones Amongst Snow
The day had arrived. And I had been uncertain of how to feel about it. It was a day that marked a return to unfamiliar territory. A place I had visited only once before and only...
A Lamb Among Wolves Ch:50
Glancing up at her massive sister in law, the large feline offered her a timid smile, one that betrayed her imposing figure. vanna fiddled with her own bowl uneasily as she spoke. "i-i figured i'd wait to stand till....you know...." vanna murmured.
Raised by Humans
(Moved from Pastebin.) Heads up here, there's not going to be anything lewd in this story. It is strictly paternal. This is looking to be a longer greentext (up until a certain point), so you can save your time if that's really not your...
Prowler's Log: The Story of the Shadow Runners: Entries 1 through 50
This package is from my sister-in-law, a bottle of accordan mead!
Rekindling the Smoldering Embers
"your nieces and sister-in-law say hi." fluttershy immediately burst into laughter while trying to not drop gladesong. "ohohohoho my goodness!