The real reason her run is dead in the water is Syria.
If Trump succeeds in withdrawing from Syria, and reducing troop levels in Afghanistan, then the defense lobby will have no choice but to throw a huge amount of money at a war hawk during the blue primary. And they would do anything to make sure Tulsi isn’t nominated.
The LGBT stuff, while understandably important to you, will end up being a red herring.
It may already be one. It could very well be that the current hit jobs on her are flowing from the Clinton machine.