It appears from the Reduxx article that she should be able to decline the fight, if she only wants to fight against women, and that a female only league would effectively be created, with an extra league for women who were willing to fight non-females. At least I think that’s what it means. If that’s the case, it’s particularly unfair that she wasn’t allowed to make an informed decision.
“NAGA does not require biological women to compete against transgender women. Instead, we give the choice to the biological women and if they decline, they compete in a division only with other biological women.”
NAGA then provided a link to their official policy, which reads: “For those who chose not to compete with the transgender female, we will inquire if they have an interest in entering a separate division which includes the transgender female. This additional division will be offered at no cost to those competitors. However, if individuals decline this opportunity, the transgender female will be directed to compete with the males in their respective weight and skill level category.”