My roommate said he wouldn’t be able to pay the rent this month, and I said okay, I understand, things happen. But you won’t believe it, the next day he bought himself new shoes! On one hand, I’m saying, ‘we are separate individuals, I can’t interfere,’ but on the other hand, I’m thinking, ‘am I supposed to handle everything by myself?’ What would you do?
Girl, are you going to handle everything all by yourself? It doesn’t work that way. If you were my daughter, I would sit down and talk to you nicely, asking, ‘If you can’t pay the rent, why are you shopping?’ One should have some sense of responsibility 
There’s a job for me here, you know. I mean, is it normal? Not being able to pay rent but buying shoes and stuff. Maybe they’re spending money on other things and not telling you. On the one hand, it’s definitely hard to understand these things all at once 
So here’s the thing, it’s definitely a bad situation, but maybe you’ve been a bit too hard on her. After all, we’re all human, and sometimes there are people who just can’t get their spending in order right away. But if this girl is openly challenging you, that’s a different discussion, of course.
It seems there are two separate problems here: one is a financial arrangement issue, and the other is a lack of communication. Whether or not to buy shoes is definitely your choice, but if clear rules regarding rent are not established, this will continue like this. Sit down and talk about what you will do. You could even make a written agreement to prevent this situation from causing problems in the future.
I should probably update you. You know how a friend mentioned that money might be going elsewhere? It really feels like that. I noticed you seem to be spending a lot on your phone. But what can I say? It feels like if I talk to you face to face, it’ll lead to an argument 
Sister, this is a mutual obligation. If