ok so literally she does not let you use the stairs in the library. Like you could be just about to reach the top stair, and she will make you come down. Too bad if you are just a little sixth grader and you didn't know! She does not give you a pass and makes you go all the way around in the most inconvienet way and takes five minutes
ok so she may be sort of, um, strict on the outside. but, if she likes you enough she is a very nice and helpful teacher and will let you get away with almost anything (now & then)
ya, she may be a marine corps drill sergant on the outside, but once you get to know her, she's really nice.