"When deploying Tasers, rangers target the subject's lower center mass, legs or back if possible. It appears the ranger targeted appropriately in this case," the statement said.
BLM spokeswoman Erin Curtis said she could not comment on the pending lawsuit.
"I think it's especially egregious that she was Tasered in the groin area," said Lisa Mottet, director of the Transgender Civil Rights Project.
According to a 2011 survey conducted by the Transgender Civil Rights Project in conjunction with the National Center for Transgender Equality, 29 percent of transgender people reported being harassed or disrespected by law enforcement because they were transgender, said Mottet.
"Police and law enforcement generally are known to be hostile to transgender folks, which is especially frightening when someone has a gun or a Taser or other weapons," she said.
"Transgender people often experience incredibly negative experiences with law enforcement in general," said Mottet, "Sometimes, it escalates into physical or sexual assault, like it did in this case."