I think she did because of this thing she said " For Sam I'm confused why he trusted, geniually" which means she didn't trust him personally either.She did? Sam was btw "saved" by Tatsus vote, and Asa did also question Tatsu right?
If Sam flips scum it wont look good for Shad too.
As for the second thing that is correct. Tatsu and DD's reasons to go for Marm over Sam didn't sit well with me, but ofc it sounds cheap coming from someone that voted Marm aswell lol.