I for one completely understand what the OP is saying. This is her life and experiences as a white passing mixed raced Indian. Her views are completely valid and relevant in the complex discussion on race. She said nothing wrong and is entitled to her view.
Nevertheless, I think we’ve imported the American version of the debate on race, our country is different and race interlocks with class. Many people believe here that if you have the trappings of a middle class life, e.g. high education, good job/own business, have a house in a nice area, then you transcend or are shielded from racism. Therefore, if you are a downtrodden victim of racism, it must mean you’re unsuccessful/failure. ‘Successful’ people must publicly distance themselves from those who experiencing racism as these are ‘losers’.
Many British Asians, particularly higher castes Indians ‘as those are the ones who are the most successful in UK) put a lot of stock in being seen to be a success. That’s why you will see some of them denying they’ve ever even witnessed racism let alone been on its receiving end because this would imply they are not doing well/unsuccessful (nevertheless, it would be good for them to acknowledge that those who were willing to put their head above the parapet led to law changes that gave them opportunities).
However, up until relatively recently, many black people of Caribbean descent, cared less about class, social standing so didn’t see it as embarrassing or a personal failing to state they have experienced racism. Now the black middle class is growing, particularly African, you will notice more denial that they have even witnessed racism or if racism happens, it was the victims fault or they lack resilience. See Kemi Badenoch for an example.
Of course you can also get the extreme where the POC is so desperate to show how well they’re doing that they become ‘more British’ than white British people or even become a champion of white supremacy! particularly for upper class whites. See Suella Braverman for example.
Race is a complex thing is especially in the UK where class is a big factor.