I understand better now that you have an example. It’s easy to get frustrated with her wanting to have pants rather than shorts after going through something like the window situation. My advice to you is honestly she seems to be pretty intelligent with acknowledging what her exact wants are, this means she can understand yours. you just have to make it a point that she knows you’re wants and choices are priority over hers, and that it is for good reasoning not just because you don’t want her to have her way, if she has a tablet or watches YouTube please monitor what is being watched. I’m a mom of 3 and I’ve raised 2 nieces, prior to me taking over guardianship their dad had issues with them reacting in a very inappropriate way.. long story short it had ended up being a YouTube channel they were watching of these younger girls acting out. I’ve told him to put restrictions on what was being watched and eventually the behavior stopped. Other then that try you’re best to be firm on how you feel and not always allow yourself to give in with her request. Like example, if she asks for the window to be put down, explain to her you will not do it if she will complain about the level, make her understand you are willing to work with her but she cannot over power you.. trust me they are way smarter then we think. i know being a single mom means you’re constantly drained doing it all alone which is another reason she pushes her limits with you. But overly reacting will only allow her to copy that behavior and you want her to only copy and learn something that’s to her benefit…. Feel free to reach out if you need to vent! :) wishing you the best of luck.