I’m financially helping my sister right now but she’s very wasteful how can I bring it up to her attention?

My sister and I have a helping relationship right now. I’m in between moving and staying with her. I help her with paying bills as well as buy supplies for the home. She is currently not working, neither is my brother in law. They are waiting for his SSI and she’s his caregiver so they are waiting on that too.

However these past months she’s been really inconsiderate on what I buy. For example toilet paper, we go through 20 rolls EVERY WEEK. I bought her cat litter and in less than 14 days she’s already out of it. After a few uses she uses new kitty litter instead of cleaning it. I bought her cat food and she feeds her every time the cat meows and like you know cats are ALWAYS asking for food.

Those are just some examples. I feel if I was t paying for things they would be more frugal. I’m debating just helping her with bills from now on because my brother in law doesn’t even appreciate my help and she’s so wasteful I’m getting resentful.

What would you do? Unfortunately I can’t move out at this moment but I’m working on it.
I’m financially helping my sister right now but she’s very wasteful how can I bring it up to her attention?
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