Well, I played through it and it triggered for me. It's kind of annoying though, basically you have to play poker with her husband quite a few times at least 7 times until you get the option to only refuse, then ask for his wife. He'll throw you out of the house, then talk to Anastasia a few times throughout the week. At her shop and at home, not sure if it's required but it's what I did.
Then the following Sunday around 10am if you have 200,000r the husband will agree to the terms and you can play him again. Win and it will trigger the first sex scene with Anastasia, if you chose the Lust path that's the only scene you'll get. If you chose Love then get the scene and talk to her throughout the week again, I had maybe a bug here but not sure, the following Sunday I played the Husband again and got the same first sex scene, then the following Monday I went to her house after work and it triggered the husband leaving scene. Then you have to talk to Brick, get the number for Umar, talked to him and pay him off then you can have sex with Anastasia whenever.