AITA for distancing myself from someone who brought meth into my car?

I am five years sober from meth myself (35 M) and I got close to someone who was also five years sober from meth (32 F). They told me they relapsed, and I did my best to help them through talking to police and getting their kid back (which social services removed from their care.

Next thing I know they brought meth into my car to use it in the gas station bathroom, which they admitted to me later without apology or any sign of thinking it was wrong. They just said it nonchalantly when I was reading to them what the courts expected, which included a clean UA. This was admitted when they came to my house we were sitting there and as I said I was reading court paperwork to them and it was late.

She out of nowhere asks me to bring her home and when I said I would she went into this dramatic rant about how no one can "handle" her and that no one sticks around. This was her first time at my house though I've been her friend since high school and more recently interested in dating her. I jumped through every hoop to try and help her and went way out of my way even paying her to help with laundry and anything she needed including buying her toilet paper.

After she flipped out and I assured her I wasn't going anywhere, I then drove her home only to have her call a friend who lives 30 some miles away, and after she got dramatic again I brought her there. Again, I only wanted to help but the more I thought about it the more I felt my trust was more than violated. They called me a few days later as if nothing had happened. I answered and politely declined giving her a ride to the same friend's house. I haven't spoken with her since because I plain do not trust her nor want to be around her anymore. I feel like I should explain what happened and why I am distant now, but I also know as an adult that they know exactly what they did and showed no remorse.