How to break it off with crazy girl and mom

I met this girl at work and we started hanging out, I had expressed from the start that I am most likely not gonna be able to date her because we are both going to different colleges across the country. We hung out a couple times, but she is just super mean and awkward and I can’t make this work. So last night we went to her schools formal and it wasn’t good. After the dance she keeps asking me to go “chill” in some random parking lot which I did not wanna do. After she just ended up drinking getting all fucked up so I took her home. She’s like trying to talk to me about dating and I kept saying “let’s talk when you’re sober in the morning”. After this I finally managed to get her out of the car to her front door then her mom came out. She was kinda mad she drank, but her daughter told me her mom allows it, so it’s not really on me. Her mom is fucking crazy… basically asked me why I won’t date her daughter and I told her my reasons if long distance and school and it will just be very hard for both. I mean already her daughter is complaining I don’t give her enough time, how does she expect me to give her time when she’s across the country? Anyways her mom was pressing me to date her saying it’ll be good and I so good for her and basically trauma dumped her whole past on me and idk what to do. Sorry for the long backstory but it kinda plays a factor on what I’m asking. She asked me to hangout at her place and watch a movie, I DO NOT wanna do that or even keep talking to her. But I’m scared to break it off cause of her mom. Any advice would be much appreciated