Thank you. yeah, I'm not sure it's more difficult, but being white presenting does come with it's own set of challenges.
People do make assumptions and we are made to prove who we are, on both sides of the coin. In my experience, I've been rejected by Black people as not being "Black enough" and by white people because I'm not white.
The hardest thing, especially as a child to understand as a white presenting mixed-race person is the acceptance which is given when it's assumed you're white and how that can be so quickly rescinded when the one simple fact of having a Black parent becomes known. It's hurtful and confusing to a kid when they were allowed to be friends with "so and so" one day and then the next they aren't, etc.