I recently moved back to Western Europe to a country where my parents live. I'm about 35 and have solid work experience of about 8 years. The job market in this country is pretty tight but I recently managed to find a very good job. The reason I chose to go to this country is because I spent my teen years there and my parents still live there. On my CV when job hunting I omitted to mention the fact that I had enrolled in law school (this is now 16 years ago) in this country after high school because I didn't sit the exams. Subsequently I went to do law school in the UK and did a masters at a very prestigious and selective law school elsewhere in Europe. During my interview my current employer asked why or if I had ever studied in this country and I said no. The company employs some 2500 people. Unfortunately, the other day whilst walking in the office, I crossed a girl whom I immediately recognized to be a good friend of mine from law school from that first year of law school (from 16 years ago) She didn't seem to recognize me either. However I have crossed her twice now and am absolutely terrified of being found out and fired for lying at my interview and omitting this information from my CV. She works on another floor but in a related function. What should I do? I really need this job.
Additional information: They asked because there's a perception that expat people like me don't integrate properly and some of them think that people who go and study in the UK and US have a much easier time with their studies. Many think their own system is better even though I don't see many of these institutions on global rankings (certainly not the school I enrolled at) and I did do my Masters at an extremely selective European school anyway. The expats think the locals are snobs and elitist in a who knows who way. Also, most employers here are international companies. My company happens to be local and is trying to internationalize so has recently started recruiting more expats.