Your feelings are completely valid. You put your heart into something beautiful for Rachel’s wedding, only to have her belittle your work and passion. That kind of dismissiveness—especially from family—hurts deeply. You weren’t trying to steal the spotlight; you were just standing up for yourself.
It sounds like your family has a pattern of undermining your achievements, which makes this moment even more painful. Walking away wasn’t selfish—it was an act of self-respect. If they can’t see that, it’s on them, not you.
If you’re open to it, a conversation with Rachel (when emotions have settled) might help clear the air. But if she or your family continue to dismiss your feelings, you have every right to create boundaries. Your work is meaningful, and you don’t need their validation to prove it.