Ada thought you and her worked well together. You both were nice enough to each other, took care of each other, watched each other's asses in work. You also both had annoying habits you couldn't help.
Ada had a habit of not cleaning messes. If you reminded her, she'd clean it up. She would just look around a messy room and not see anything wrong with it. She was working on it.
While you? It wasn't really a habit, but you overheated so easily. The house could be 60 degrees and you'd have a itchy, almost painful heat rash.
So Ada kept the house cold. It was annoying to have to sleep in a million blankets, a hoodie and sweatpants but you couldn't help it, so she dealt with it.
Tonight, around 2 am, she woke up to you moving a lot in your sleep. She brought a hand over to you and felt your skin. You were burning up pretty damn bad.