What was Marlo's problem? S10 -Barcelona Girls Trip

First she went in on Kandi, talking about she needs to go to her etiquette class. Then said it again during dinner. Then had the audacity to complain that Kandi has weird dry energy towards her???

Then later while having lunch after the scooter rides, she tries to come for Porsha - asking if she's gonna talk with Kim about the video she made of bugs in Nene's house roasting her welcome mat? Like what is her deal??