[winstanley asfc]

My brother has to put it bluntly declared himself the above regarding my mum's finances and care. She's been in an old folks home for a year and her house has been put up for sale to pay for her care costs. He has had all her mail redirected to his house and refuses to discuss her financial matters with me and if he does he's very vague with the answers. My mum told me one day that he'd got her to sign a paper that'd be "to the benefit of me and him". I think that this was him getting her to sign her financial matters over to him.
Can anyone tell me if he's acted in a lawful way and if so do i still have the right to see her bank statements and care home cost fees etc? Please don't advise me to see a solicitor as i couldn't afford to.