Mom Has Been Stealing Medication From The Entire Family

I'm going to try to make this as detailed as possible. I'm 19 years old and I pay rent every month to live with my stepdad and my mom. Since I was a preteen, my mother has been consistently stealing controlled substances from both me and my stepdad.

I have seizures and have frequently had them go 5+ minutes long and was prescribed an emergency rescue medication, a benzodiazepine, that would go missing every time it was filled. Medicine that could potentially save my life. She has stolen it from me so many times that my doctor won't let me fill it anymore until I go back in to get another EEG. My neurologist is 4 hours away. I can't drive and my stepdad works all day so I haven't been able to go. I have none left and am scared that something will happen and I will be dead.

My stepdad has a prescription for narcotics that he takes when his back acts up. He does not fill it until he has to take it, but my mom has previously filled it for him and taken all of it, or stolen it from him once he did fill it. He had to put a camera in his office so that he could make sure she didn't steal any. He has her on video, not entirely clearly, opening a pill bottle of his and walking out of the office. I'm not sure that it would be enough to qualify as evidence.

Recently, my grandpa (her dad) died and she went to my grandma's (her mom's) house with my aunt (her sister). She rooted through my grandma's closet as well as my aunt's things, we're assuming to try and find pills. She frequently calls her doctor not long after she fills her meds to say that the dosage was wrong or that they messed it up. She tries to fill it early, and her primary doctor has refused to prescribe it anymore because of this. She now gets it from a pain management doctor.

My stepdad refuses to give her any of his prescriptions, even though they take the same one because it's still illegal. When he says no to her, she goes into these insane rages where she throws coffee mugs against the wall and against him and screams and yells. One night, she was sobbing, hysterical to the point that it sounded fake, all. night. long. I have a voice recording where you can hear her screaming and mugs shattering and my stepdad saying that he will call the police if she doesn't stop throwing things at him.

It has just been getting worse lately and I really want to report her. Not because I want to see her get in trouble, but because I am worried about her. It's not normal. I want to file a police report and I know how to do it, but can I even do that when it isn't just an isolated incident? And without sufficient, concrete evidence? I know my stepdad, aunt, grandma, and everyone would back everything up and support me, but would they even bother to question them because of the lack of real evidence? Any advice is appreciated. Sorry for the wall of text