My moms personality changed completely...

Jesa
So I'm pretty much posting this because I kind of want to know if I'm just being ridiculous or if anyone has been through this. It's a long story. So pretty much my whole life my mom was a stay at home mom and was kind and never swore and was everything you wanted your mom to be. She was the strong parent because my dad was an alcoholic my whole life. Anyways fast forward to me being 16, my mom left my dad and took us with her. We stayed with a friend for about 4 months and then we got a small apartment of our own. Soon after my moms personality completely changed. She started drinking a lot (and she literally never did before because my dad) and she got a boyfriend who was 12 years younger than her. After introducing him to us once she decided that he was going to move in with us... And then she told him that he could even discipline us if he wanted. This cause my mom and I to fight a lot during that time. She literally put her boyfriend before her kids. One Christmas she got us nothing but he got a new phone. I would try to talk to her about it and she would just say that I was wrong and I didn't know anything. Anyways, now I'm 20 and married. My husband and I were dating while all that was going on so he was my only getaway. Now my mom is in cosmetology school and she literally talks and acts like she's a teenager. She started smoking weed around her 2 year old... And she always makes comments about my appearance to make me feel bad about myself. I'm about to be a mom and taking 2 hours to do my hair and makeup is not a priority to me lol. She even has changed the way she talks and says "girl..." When she's talking to me all the time. It makes me uncomfortable. She was like my best friend growing up and now it feels like I'm more mature than she is. Should I just try to ignore it and move on or should I say something? I don't even know what I would say but I just find her so annoying now because it's like she's in highschool...