she is achieving and asserting herself, a right that is denied to her on most every other level.

names are symbols. taking ownership of your name may not be material, but it is meaningful. if names were meaningless, trans people wouldn’t change their names, African-American communities wouldn’t change their names, et cetera. but they do, and feminists do, because achieving oneself, having domain over oneself even to the extent of identity, is meaningful especially against a history where that right is restricted against you in favor of the dominant class.