Reckless Sister

Long story short sister is going through divorce. Except she’s not all she’s done is tell her man she’s leaving and move closer to me with her kids to sleep around w a bunch of strangers. Pretty sure her main reason for leaving was because her husband went to train for a job and she can’t go a week without dick. There’s other reasons like lack of attention and freedom but that must have done him in for her. She’s heartless toward it now. She’s convinced she’s alright and her girls are alright. She moved into an apartment and and got a new job the week she moved here and the week of my wedding. I had to move her ass twice and babysit instead of finishing up last minute things and relaxing before I celebrating my marriage while she throws hers away. She’s been sleeping with multiple guys and has already had multiple pregnancy scares with diff ones. She doesn’t understand how birth control or her body works and she’s 28 years old. I can support a woman who needs her freedom and dignity back but this ain’t it. I wouldn’t care so much if it wasn’t for my nieces. There are neglected emotionally and physically. They are dirty and always saying their pee pee hurts. They are mean and physically abusive to each other and any new friends. The oldest recently confessed to feeling suicidal and she hasn’t done anything about it. The youngest is four and still can’t go potty on her own properly. All my sister wanted growing up was to be the best mom she could and now she’s pawning them off at my house every free night she gets. She’s basically in a relationship with someone while sleeping with others and each guy comes to her house while the kids are playing or sleeping in the other room. It’s not fair to them and idk how to handle her anymore. I can barely stand to be around her or hold a conversation because she’s so ignorant and they’re all about guys. Sorry my hormones are raging and my heart is breaking for the girls. Just needed to vent it out..

Father is no better of a parent. He’s claimed a wife and kids aren’t enough for him and already abandon one kid pretty much. He’s training for a govt job he will likely give up in six months. Am I supposed to send my sister away and take in her kids?? There has to be another solution before it gets to that. Obviously talking to her is something but nothing really gets through. She’s convinced she’s okay. I can try again to have a heart to heart but that’s about it. For the longest time I felt like I was blowing it out of proportion but seems like others agree this isn’t right to do with the children involved

Update: so she got too drunk last night and started acting dumb blurting out a bunch about doing drugs with her new boyfriend. I called her tf out. I straight up said get your sh*t together. I told her that her new bf is terrible if he’s doing that with her knowing she’s a single mom with two kids. I started with “you’re a grown woman” and before I could finish she added in “and I can do whatever the f I want” NOPE. I’m done tolerating her mentality. She needs to step up and she’s had plenty of help so she has no excuse not to. She is perfectly okay with the divorce so I can’t even feel sorry for her anymore. I will not be calling cps yet because I don’t want them put in the hands of their father or someone we don’t know. I’m seriously about to just ask if I can take them in so she can be her own damn person and only hurt herself. It’s difficult because technically she provides the bare minimum with them. They have a roof over their heads and food in their bellies. She doesn’t physically abuse them just pretty much abandons them every chance she gets