One point, in life you are going to get some bad interviewers. Chalk it up. MIT will eventually get around to giving this particular EC bad scores, as the admissons office will score her report on you. Since she did not get to know you, in her time with you, that will show in her report. Don’t sweat it. The interview is used, but not the most heavily weighted factor and if she wrote a sloppy report, it may not be heavily weighed for or against you. With that, hold your cards closer to your chest, as why tell anyone your personal financial information,in any future interview (job, graduate school, transfer , another college interview ). However a GOOD MIT EC should refer you to the financial aid people if you need that sort of information. A good EC should offer you support for whatever your needs are for learning about MIT and your fit for the school. Sorry you had a very bad experience, and MIT is sure to be concerned if you do call them, but that is tricky as how do you sound to the admissions office complaining about the one person you have had contact with so far? Its not easy to complain about an EC and a little risky. I would not do that. Just hope for the best.