Knowing the Navy like I do...20 years retired...the Navy is all about cleaning. Do we have maids cleaning our barracks rooms...uhh no! Do they get inspected? Yes. All the time. One reason I hated living in the barracks...having said that, cleaning supplies are essential in your room. I bet not a single person imagined she would ingest anything like that. So, quite possibly that is what she had access to, Maybe it was a medication, but I don't know many sailors that are allowed to be on benzos and some of those types of drugs. Btw, we were constantly tested for illegal drugs and illegal prescription drugs, it's random, they draw a,number, usually the last number of your ssn. Everyone that had an ssn that matches that number got tested. Never knew when it could happen and it wasn't unusual for your number to be picked multiple times in a row. Also, it's all urine testing and you are observed with the cubicle door open whilst you go. And drug sniffing dogs can show up at your work center and parking lot at random times too.So, more than likely she was not a drug user.