The Access Social Care (ASC) charity said it had campaigned for four years for the government to disclose how it made decisions on social care funding and echoed Ms Sharp’s calls for transparency.
Three government departments lodged an appeal against orders to disclose information about how social care funding is calculated, ASC said, with the appeal currently being heard by the Information Rights Tribunal.
The BBC approached the government for comment but is yet to receive a response.
Kari Gerstheimer, ASC chief executive officer, said: “Transparency isn’t optional, it’s the foundation of a fair and accountable social care system.
“The public, local councils, and specialist organisations all deserve to know how social care funding is decided.”
In response to Ms Sharp’s case, Ian Spicer, Rotherham Council’s strategic director of adult social care, housing and public health said: “The council has a duty to operate within relevant legislative frameworks and guidance.
“Where a need relates to a health function, the council is unable to commission these without delegated authority from the NHS South Yorkshire Integrated Care Board.
“However, the council continues to work in partnership with the relevant NHS integrated care board, as well as other partners, to ensure a holistic approach in meeting needs is adopted by the most appropriate agency.”