Always best to avoid questions you have no answer to, I suppose.
She was mocking the traditions of curtseying the Queen, calling our traditions Medieval while laughing at them. If a white British person mocked the traditions of an African culture in such a way you would call it racist, ignorant and insulting. Your double standards are there for all to see and have been well and truly exposed.
A birthday cake? Thanks, but you're a few months late.