To the best of my knowledge, she is the first woman astronaut to have died.
The end result is that watching "The Dream Is Alive" is even weirder now since Challenger, Dick Scobee, and Sally Ride feature prominently in it.
One thing I am quietly pleased about: No one is making a big deal of the fact that she was a lesbian. She didn't make a big deal out of it in life. I'm sure she'd much rather be known as the first American woman in space and for all the work she did in popularizing science than who she chose to sleep with.