My mom was high in my house infront of my daughter (1yo).

I apologise in advance if this is the wrong place for this post.I'm really in need of some advice.Alittle bit of background: I am 26 and have a 1yo daughter. My mom was addicted to a prescription drug for more than 10years. She managed to quit about 2 years ago. She would do crazy and stupid things while high on it. She'd collapse on the floor while cleaning, say all sorts of nonsense, and lots of other illogical stuff. She gave me her drugs when I was 14 and I got hooked up on it for a couple of years. I finally got clean a few years back and regretted every single day on the amount of precious time I had wasted on this crap.Last night: My mom has been coming to my place on alternate days to stay over cos she's having relationship issues with my dad. Everything was normal until she started cleaning and doing really weird things. I had asked her to stop repeatedly. Her behaviour was just getting more and more odd and down right abnormal. She started talking in a very stone way to my daughter and spouting nonsense to her. She also ransacked my whole house, rearranging every single thing. I got so tired of asking her to stop it and didn't want to argue with her infront of my daughter. It was bed time so I brought my daughter in our room to sleep.The lights were completely off, pitch black. My daughter sound asleep (which was rare at 10:30pm, my mom knows how difficult it was to put her to sleep), complete silence and obvious we were sleeping. My mom barged in and asked where is the aircon remote in a loud deafening voice. She would never do this even if we were awake. It was just totally NOT what she would do normally. Even my husband was shocked and 100% sure she was high on something.I decided it was enough when she had the tv volume up. I asked her what medicine did she take and just tell me honestly. She denied she took any medication.This morning, she left for work early and we needed to go for a doctor's appointment. She has misplaced every single object in the house, I couldn't find the things I need to get ready and got really pissed off. I texted her and told her to stop doing this. I asked her to come clean and again, she refused to. I told her to take her medication at her own home, please do not get high in front of my child.Am I being rude? I'm really lost and angry at the same time. I feel so betrayed, letting her come stay over as and when she likes, but she disrespected it by doing this. I don't know if I'm overreacting? But I know for sure I do not want my child to witness any of that. Even though she's still really small and probably doesn't know what's going on, but she's at the age where she's starting to mimic what adults do. I'm really afraid if this time its rearranging stuff in my house, what could be next? Could she be a danger to my daughter?Today she started being really cold and distant towards me. Seems like what a guilty person would do? I don't understand why couldn't she just tell me she took those meds. I am so disappointed in her.What should I do in this situation? :( via /r/Parenting https://ift.tt/2nUIKT2