Its tough. I am 19 years old in college and im not in good terms with my stepmom. Only recently I was able to stay for as long as I want after a big ass fight with her where she ended up crying. But at any moment she can take em away just cuz she owns the house and blah blah blah. To answer your question. No it wasn't worth it. Maybe at the moment yes but afterwards I bet you wished not to have done anything like that. Grounding you is not the answer. For me it only backfired since I was getting her more pissed off cuz of revenge. Having strict shit parents is a bitch no matter what they do for you.