She will just give it to her daughter who offers no help of any kind. She is a financial burden to her son and myself and I am beginning to resent all that I do for her because she gets ugly about contributing. Between extreme spending and giving to her daughter and and grandson she ran through every cent her parents left her plus mortgaged the free and clear home they left her. THe daughter helps with NOTHING. My husband and I can not even have an evening out to dinner alone! After being diagnosed with dementia six months ago and being totally broke except for her ssi her son moved her in with us. It is a financial strain on us and I feel she should be contributing. Where can you live for free?
In the meantime, you need to go to the SS office and ask for representative payee status for her SS and/or SSI. They usually don't even need a doctor's statement, just the fact that she is living with you and depends on your care. If granted, the checks will be deposited in your name either on a debit card or in a bank account which you have opened for her expenses. Once a year, SS will ask you to fill out a form stating roughly where the money went and how much is left over. Her toiletries, groceries, clothes, supplies and medicines will come out of this account. The IRS will let you list her as a dependent if you contribute at least 1/2 of her living expenses. They have a formula to figure that out on their website or consult a tax expert. You might get a little more refund this year. Every penny helps.
If you still want to tackle your husband about this in the hope of making him see sense, that is of course up to you - only you can know whether it's worth the bother. I'm just pointing out that you probably won't actually need to.
Have a sit down with your husband privately.
You deserve a date night too (or more!). Have another relative (son) sit with her when you go out. You need to speak up and let your hubby know how you feel and get some help. God Bless.
If you and your husband are planning to provide her with a home and care in the long-term, you must make provision NOW, before she loses capacity, to take responsibility for her income and outgoings (through a POA, if possible) - otherwise there will be a world of trouble and stress ahead.
How is your brother's relationship with his sister? If she is unthinking, rather than intentionally exploitative, perhaps he can get her to concentrate on their mother's welfare and co-operate: it would make setting up POA much easier.