Meta Market Specialist interview questions

The whole process took for a month in which I first had a written exam and then attended 8 interviews: 3 phone calls and 5 video conference interviews. The first interview was with my recruiter and then I had interviews with the team members and managers. Everyone I've interviewed was friendly and they made me feel really comfortable. A week later than my last interview I've received an offer letter.

Initial round with online test for 600-800 words essay in 30 mins. Then, moved to HR screening phone interview. Both were quite easy and helped me to understand what the job might be. After that, had 40 min long video conference call with one of the team members. Questions were quite straight forward, but her attitude was not welcoming. I knew that she's not gonna put me in the next round at the very first second of the video interview. She made an unpleasant face immediately after she saw me on the screen. (Like I look that bad?) The 40 min call was basically torture for both of us. She mechanically asked me questions related to the job, and it didn't seem that she paid attention on my answers. I have a MSc and some research experience at the LSE, but her final question was "Have I dream about living in Europe?" I just hope that she doesn't behave like that to other interviewees.