Congratulations on your career choice, Pigfat! I currently work in law enforcement and can't imagine a more fulfilling or at times more infuriating career choice (mostly the politics within the agency and at times some of the calls/inability to do SOMETHING but anyway...). I don't blame you in the least for feeling how you do about wanting to get home and just chill. I was the same when I was at the academy and also now when I work. It takes some time to decompress and go from constantly being on your guard and watching things to being able to relax and realize the person sitting next to you isn't a potential threat and is instead someone you care about. My wife and I went through a learning curve while I was in training and also too the first year or two I was starting my career. We've come to the point to where she leaves me alone for the first hour or two after I get home while I decompress and work on being a functional human being again, lol! As has already been said, sit her down and lay it out for her as far as what you're dealing with at your training, the toll it takes to constantly have to be "on" for people (classmates, instructors, cadre, etc.) and how valuable that time to yourself can be. If she's not willing to hear that or compromise with you to where you guys still get to see each other but you also get your time, well...then I think that question answers itself. Good luck with things and be safe!