It can range from adoption or just community outreach programs to let her know that people care and that she is a normal human being. Communication WAS tried, she tried to explain it to her parents but they just ignored any kind of real psychological source and went straight to religious mumbo jumbo. Regardless of intentions, modern day parents that eschew scientific advancement for psuedo-science and superstition are a great danger to their children. They don't have to WANT to hurt them to do so. It shouldn't be the intent that decided whether or not we pull a child out of a harmful situation.
I do concede that it would take a perfect world to have a place to put all the endangered children in a given area and that just tossing children in some orphanage can be quite traumatizing in its own right.
Communication was tried, but it was not exhausted. Two parties do not always resolve a disagreement amongst themselves alone – that is why we have third parties to arbitrate, whether it be a community leader or counsellor. Intent matters because implies that the parents can be reasoned with – they have a sense of love and tolerance that can be appealed to.
Do not be so quick to write off a human being because of one disagreeable aspect. That's one thing that Leelah's parents didn't do. They didn't disown her, they didn't call her names or refer to her insultingly (please consult Leelah's reddit post in a link above). They tried to find help for Leelah, but were misguided because they thought the problem was Leelah being transgender and the solution was to remove her transgender character. Remove this belief and I think the result would have been quite different. They weren't dangerous people, they were well-meaning people with a dangerous belief. That's exactly the kind of people who would benefit from therapy the most.
Don't we have plenty of examples of devoutly religious parents who came to tolerate, if not accept, their homosexual or transgender children after an intervention (which didn't involve their immediate removal from their children)? Like I have said before, the pity is that an intervention did not come.
With respect to the idea that her parents forced her into the suicide, well, I think it's on you to make the case that it is because I don't see how we could construe that her parents pressured or coerced her to kill herself.