My story is 100% identical to yours with two exceptions:
1. I'm a male
2. I was drinking in my car to/from work during the 45 minute commute
How I didn't get caught or fired is anybody's guess. Part of it is because I don't really have to interface with too many people as part of my job. Another part is because people are so wrapped up in themselves I'm pretty sure my hair could have been on fire and they wouldn't have noticed.