Help with lawyer and application fees

My partners Mum’s Visa renewal was denied by the home office even though she has been here for 20 years and the Uk is her home. She’s such an amazing hard working home carer, always looking after other people and she now has to face court and fight an application for her right to stay in the UK, the application fees like £1000 and the lawyer Is also very expensive. I would like to help them out as much as I can as they’ve all been through a lot this year with my partners Dad passing from cancer this spring and they and their mum help each other in so many ways.