I don't think I have a good enough explanation as to why she out of all the characters is my favorite, maybe it's the fact that you get to see her a lot more than any other character in any fnaf themed game, or just we got to see a night guard with a personality for once
It makes it a bit sad for me what happens after night 6, but it also makes me question why the lock stopped her. Didn't she lock it herself? Doesn't she have a key ring with a key for it? It puzzles me how she wasn't able to get past it when she was the nightguard for the place