So anyways, Nina is a baby girl and I love her dearly! If you don't like Nina get off my account (: all the reasons people hate her are rooted in cringe culture, misogyny and many other things. Her design is absolutely adoreable and she can be a super cool and fun character to write in the mansion AU!
Her and Toby would probably click pretty well! They both have these really outgoing, bubbly attitudes and infodump about their hyperfocuses all the time.
Jeff sees her as a little sister he has to protect, so she gets annoying but he loves her nonetheless. Her want for Jeff wasn't a romantic one it seemed, but rather one because she lacked having a proper authority figure in her life. She's always been the older sibling and she just wanted to have someone guide her in her life.
She really likes FNAF! It reminds her of being around her little brother, and also she has a lot of memories with playing it with BEN + Toby. Her favorite is Chica! (BEN rlly likes Springtrap and Toby is a Foxy and Bonnie stan, also!!!)