I need help and I don't know what to do
So, I (17F) have a narcissistic and verbally (and emotionally) abusive guardian. She's my step-grandmother from my maternal side. So, I basically had a phone that she didn't know about that I bought with my own money, and my bio dad fixed it for me a while back...I was told specifically not to let Nicole (step-grandmother) know I have the phone because she was going to flip and cause a scene. So, two days ago, on Tuesday, she did find out because she didn't knock on the door, breaching privacy, and she absolutely flipped. When she told me to give it to her, I kept refusing because I KNOW how she is. She's a liar and manipulator who likes to target me and make me feel like everything is MY fault, while also keeping me down and making me believe that I won't be able to do anything with my life and will live with them until they pass because of how useless I am.
But besides that, I still refused to give up the only device I had that distracted my mind from spiraling (and I used it to at least let people know what happens in my home, including my papa/bio dad, Kevin). In turn, she said that if I didn't give up my phone, she would sell every single thing I owned, including the stuff I BOUGHT MYSELF WITH MY MONEY. She also threatened me that if I didn't give her the phone, she would treat me like a roommate instead of a daughter, and make me provide everything for myself, including food, water, a bed, clothes, etc...
When I still refused, she went next door, where her sister lives, and brought her over to force me to give up the phone. I still refused, of course...and when I tried to leave (I put my phone and charging cord into my backpack btw...and I understand this is a stupid post about a damn phone...I understand that.) Heather, my aunt and Nicole's sister, tried to grab the bag from me, resulting in her also grabbing my arm, which I had to force out of her grip (my wrist hurt for quite a while after, and I was shaking). Eventually, I just gave the phone to Heather so I wouldn't risk myself more drama.
The next morning, since I couldn't go back to sleep after my younger sister's alarm went off at 4:30 in the morning, I made an irrational and stupid move to try to head next door to grab my phone (stupid move, I understand...I regret doing that, but I had just woken up at the buttcrack of dawn, I was irrational and desperate at the time.) When I realized I couldn't, I decided against it and waited until I headed to school (this happened yesterday, btw).
When I got to school, I used my best friend, Avery's phone, in order to contact my paternal grandparents, Sandy and Jay (love them btw, they are the only people I feel safe with...not to mention they're the only ones I'm blood related to in this family...besides my younger sister (15F)) to let them know what happened. In turn, they told me to talk to the counselor so I could talk to someone. I did, CPS was called...the police were involved...and after I told them what happened, they went home and inspected the house (because my house is infested with cockroaches, the floor was busted open, and the house is splitting in two)...and when I was gonna go home, I called Sandy again in which I requested to go home with them because I was terrified to go home, I was on the verge of having a panic attack, and I cried nonstop yesterday to the point I'm surprised I can even cry at this point.
Grandpa Jay came and picked me up, dropped me off at their house so I could at least calm down before heading home...then Nicole called Sandy, asked where I was, and Sandy said I was with her to calm down. Nicole was NOT happy whatsoever and demanded I go home right that instant. Sandy said no, and when she was gonna tell Nicole, "She isn't going home until she calms down", Nicole hung up on her and called the police. Of course, I was spiraling even more, just eating two pickles while I bawled my eyes out and cried. When the police came, I went to the bedroom that Sandy and Jay specifically set up FOR ME and stayed there while they talked to the policeman and told him their side of the story. The policeman understood, but said I still had to go home.
When I got into the car, I didn't want to talk, too scared to do so, so I remained silent. When we got home, Nicole immediately told me I was to deal with the dog's potty area, clean it up, throw out the trash, and clean the makeup off my face (it's waterproof and I had no makeup remover, so you can probably assume how fun it was to get off). I heard the "get the makeup off and deal with the potty area," but didn't process "throw out the trash". I have memory issues, by the way, and have difficulty hearing people, especially myself. So when I finished with my makeup, I went out, thought about what she said, saw the dishes, and assumed I was to deal with the dishes. So I did...Nicole wasn't happy about that, but I did deal with the trash and dog poop. When I finished, Nicole told me to go to my room, sit on the bed, and stay silent. I wasn't allowed to touch anything, move, go to the restroom, nor eat. I had to ask permission to eat, and I had to ask permission to use the bathroom, with only a 5-minute limit.
I did as she said, and when I was finally ready to talk, I did. I told her the truth (just left out the goal of wanting to get put into foster care), but she didn't believe me one bit. She kept telling me I was lying and making excuses, and the only reason she "knew" I was "lying" was because (according to her) "From one liar and manipulator to another, I know you're lying." She then asked me why I tried sneaking next door at 5 in the morning, and I told her it was because I wanted to grab my phone...and now, I am not allowed to be left alone, and when or if I get my phone back, she is getting the code to my phone and searching through it to see why I wanted it so bad. I am now left to stay in my room and not do anything for the entire summer until my senior year, and the rules would follow through into my senior year as well, until I turn 18. And if I tried contacting Sandy and Jay, she would get a restraining order against them AND Kevin as well, so I would be stuck relying solely on her. Her verbal abuse has been happening for years; it's nothing new...
I am just surprised this all happened BECAUSE OF A PHONE. It's ridiculous. I don't know what I should do...but my friends (including one who has gone through something similar) have requested I call the child protective services hotline as well as talk to my principal and say I am not going to go home unless I go to a community home to protect myself from further abuse in the home.
Can I get any advice, please? I don't know what to do...