After meeting Lestat, bestie reader isn't allowed to express any opinions on him in front of Armand. For obvious reasons, if bestie reader so much as implies a compliment, Armand crashes out. He can't get away with enacting physical violence, so he jumps to emotional manipulation. He starts acting like bestie reader just said she never wants to speak to him again. He's wounded.

as louis's best friend, bestie reader is ofc happy when louis is happy. but also, as a best friend, there is nothing more sickening than your best friend getting back together with the man from all of their most horrifically vile stories. i can't even imagine how she'd react to louis telling her he's going to go see lestat.