Bailed on my gf and a bad situation that was getting worse

I had been seeing this girl who was in her mid 20s when I was 19 that had a couple of kids with different guys. I had no intentions of it going on for long because that wasn’t what I wanted at that time of my life but hey you do what you got to do. Things started off pretty hot and fun between us and as long as it was just us it stayed that way. Then the kids started going places with us. I was an E-3 so I didn’t make much money back then and what I did get went to car insurance and my car payment, yes I fell into the new car trap, but when I had it to do we went out. Well then the kids started getting brought with us. Two little monsters that were spoiled brats and rude as hell. At first I brushed it off but it started being more and more frequent and even got to the point that she tried to get me to watch them so she could go to the grocery store. I told her no way and that was a blow up, not a shocker there. Fast forward a week to two later and I’m beyond done and looking for an exit from this and then it came. She called and said the kids were going to be gone all weekend and wanted me to come over. I was broke as hell and didn’t have the gas to come see her but I managed to muster up enough for half a tank from my roommate. I was 19 and had absolutely one thing on my mind, I would’ve sold my soul for gas money to go get laid. I drove the half hour to her house which didn’t hurt my tank much so no worries. Well after being there for a couple of hours and having our fun the doorbell rings, her mom brought the kids home. At first I figured the little monsters must’ve pushed the old lady’s buttons and she said nope I’m out but then I heard her thank her mom for taking them to go get ice cream. I started getting ticked at this point but kept my composure. Her mom left, the kids started their usual bs and she came back into the bedroom and tried to lie to me and say that her mom had to bring them back because she had something she had to go do unexpectedly. I made my mind up this was the last weekend I was coming out here and the last I was going to deal with her and her crazy kids. It was nonstop chaos for the rest of the day and I to the night until they finally passed out from exhaustion. She tried to get me to help carry them up stairs and first I said no but she was very persuasive so I helped. Next day chaos u folded early and rolled well into the night again. I tried to at least drink so I would be numb to it but she had this thing about not drinking around the kids so that was out. I decided to take a shower to at least escape it for a little while. After I had gotten out and dressed I came out to find the kids just sitting on the couch eating chips and watching tv. I asked where their mom was and the oldest said she went over to the neighbors house for a little while and had told them I would watch them until she got back, I was not told about this or asked in anyway prior. That definitely sealed the deal for me to bail. I gathered my stuff and put it in my car and went to the neighbors who hadn’t seen her. In fact the other neighbors hadn’t either. 5 hours later she comes back reaking of boos and cheap cigarettes with her friend who was equally as waisted and stinky, not to mention ugly as hell. She gave me some bs about how her friend had needed her to go with her to get her kids from her ex’s house and had paid her back for it with a drink and one thing had led to another. I didn’t care I was livid and ready bail. I go outside to sit on the front porch to calm down and then her they come. She wanted me to run to McDonald’s and get them all some food and handed me a wad of cash that was easily a couple of hundred bucks. The lightbulb snapped on in my head and said you know what sure. I took the money, got in my car and left. I didn’t stop until I got back to my room. I paid my room mate back, topped off my car, and ordered the two of us a pizza. I expected to get the angry phone calls and instant messenger messages but nothing came. Days went by and nothing. Then she messaged me and asked if I was coming over that weekend. I told her no and that I was out. She couldn’t figure out why and got all upset but that was that. She never mentioned the money or messaged me again. I figured she had no memory of giving me the money in the first place because she was so waisted and chances were I wasn’t the only guy coming to her house regularly so I dodged a huge bullet and made some cash in the end.