I can’t even imagine what you’re going through. I am glad that you kid knows all the ways that people can love each other in the world. I just also hope that her friends and their friends will be as much understanding as you are.
I can also see how the girl that she had a crush on maybe wasn’t mature enough to identify herself as anyone so I guess that “relationship” wasn’t a great one. The tip that I can you is showing your daughter what it means to be kind. This way she will know whether people are acceptive of her and will find out what people can support her and become friends with her. If you need a piece of advice on how to communicate kindness to your kids find tips in my blog https://aliciaortego.com/what-does-it-mean-to-be-kind/