Probably helps her to sleep at night for her gender bigotry by trying to offset with other charitable giving. Most people see through it
I think 'most' people see a woman who has expressed support for other women and who has a long history of philanthropy. And she has not expressed anything that is 'bigoted'. In fact, I think that the chair of the ERHC would be happy to support what she has said considering she, the chairperson, has stated that women discussing the impacts of the claims for rights by other groups is not hateful.
But, considering you also stated that Matthew Paris, one of the founders of Stonewall, should be educated on the history lessons about the LGBT community. I think 'most' readers would also hold your accusation towards Joanne Rowling in the same esteem as your opinion towards Matthew Paris.
However, I am interested in hearing exactly what you believe she has said that deserves such as accusation.