Hey guys, OP here, really glad that this was my first FML to be published :) I guess I should fill in the plot holes here, yes the house was dark, she came through my porch door and through the dining room, which the creaking in the floor (as my dining room floor is known to be obnoxiously creaky) is what alerted me to think of an intruder. I was in my room on the second floor and there is a wall blocking my vision of the dining room once I get down, so when I got down I peeked the corner and just went at it at the human-ish form. Ended up fracturing one of her ribs, would have been worse if my boyfriend was home and he was the one doing the hitting. Family thinks I'm responsible because "I should have recognized it was my sister" but sorry if I hear someone breaking into my house I'm not going to sit down and have a nice chat and tea before deciding to do something. My family was in on it, and they're still trying to get me to pay, but I'm not budging on the fact that I was just trying to defend myself. Hope I explained it pretty well, thanks to everyone who helped get this published :)