Sandra has just been too almighty cocky since her first win. She took her self-proclaimed queen status WAY too seriously.
Yup, she has never been a player I have ever liked because of that too. As soon as Sandra gave her that idol I told the wife she better use that to vote Sandra out now. She saved herself a fire token too by saying she would give her the 2nd one after tribal so another smart play.
People I see that will have issues coming up at a merge will be Adam who basically has put himself on his own island on his own by trying to be a double agent, Tony who can make people paranoid with his behavior that he is not trustworthy, probably Michele and Kim who leaned too much on Parvarti and are kind of free agents at this point, and maybe Jeremy if he doesn't stab Denise in the back again. Starting to see a few tighter groups of 3 form in Sara, Ben, and Sophie and Yul, Wendell and Nick I think. If they merge at 12 (next episode) or 11 then Denise and Jeremy could potentially try to partner up with 1 of those 3 then bring in a 6th or 7th person out of Tony, Kim, Michele, and Adam who may all be desperate to find an alliance at that point.