Can Your Parents Lock You Out of the House if They're Angry at You

No, it has nothing to do with anything I've done, usually. When she gets mad about something I've done, she usually makes me stay in my room and refuses to let me out (not that unreasonable), but when she gets fed up with things in her office, she often blows up and just tells me to get out.

She's allowed to tell you to go outside and play. With your story, it's difficult to get a sense of where the facts and and the drama begins.