Any advice on this problem I have? This is long, so those who are willing to read and answer, thank you!?

ok so i think that you should write things down, so that when sally is asked, she can produce the note. that way there is no question that you did something. second, is yes, katie is a control freak, and she feels she can run the situation. she must not feel very important because, she, after all, is not the boss. so next time she feels she can boss you around, just say something underlying sally is ur boss. like , im sorry, but my BOSS, told me other wise. , or i told my BOSS about that. maybe she will get the hint then. dont treat her with disrespect or anything, because that would give her a reason to tattle on you about something. another thing is be nice to her and the exact oppisite she is to you. when she realizes she isnt getting a reaction from you, then she will get annoyed and stop. show no emotion . let what ever she says to you when she is yelling roll off you, and just smile at her and say , i understand.she will be confused as to why your not responding to her. and when she does yell, maybe dropping silent hints, to her would be good too. i really hope i helped you, i had the same problem where i worked too.