Santiago, 29, wanted to see Sugarland perform at the Indiana State Fair. Strong winds started to topple the stage at the fairgrounds as reports Indystar.
She worked to bring more health services for women Howard Brown Health Center in Chicago.
In 2010, the colleagues honoured her with a Spirit Award (=employee of the year).
"The sudden and devastating loss of Christina has left the entire community, including her Howard Brown Health Center family, heartbroken."
"Christina was an amazing woman -- one of our very brightest stars -- who worked tirelessly to improve the lives of women, particularly lesbian, bisexual, transgender and queer women ," said the president of the center, Jamal M. Edwards.