noah was (one of) the flop mess(es) that saive got involved with but will never bad-mouth in public because she's a professional! i'd love to have thelma as a costar in that, though; i'm not sure if they had scenes together but it was a relatively small cast so i'm sure they would have gotten to hang out on set!
and sadly you're probably right about the overlap between stranger things and sharp objects! sometimes you can make these things work but even with a minor role on sharp objects, it's a big enough project that i think she'd have to be available for it longer than just a month!