@Number1MuichiroFan I didn't grow up with the younger siblings, but I do have a younger step siblings thanks get too out of hand and might be something that she can do I know for a fact, Walmart might be still selling these I do not know I haven't seen them in years, but you can even get them on Facebook market. There's a little locker thing that you can get that has your own key in it. You can store your important stuff in there, and you'll be the only one able to access it mind you those little lockers that I mentioned are from when I was a little kid there's always stuff you can do to have your own privacy and I am going to ask this because this is your last resort you can always see if you can live with your dad if things get way out of hand depending on your relationship with him
