That she should be able to voice her thoughts without receiving a torrent of abuse is a perfectly reasonable expectation. It's important for the functioning of a free society that dissenting opinions are heard and debated. The visceral abuse she receives on social media directed at driving her away is toxic and, assuming that it's genuine, underscores everything that is wrong with the SJW movement.
RE. her opinion: I don't know whether transwomen are real women. The question "What is identity?" is philosophical, and philosophical questions don't have an objective answer.
It's the abortion debate all over again with its question "What is life?". Both are among the ultimate questions facing humankind, and there is no satisfying, scientific way to answer either of them.