Time is your best bet. You're in a new relationship, lord knows how much stuff happened in both your previous ones, and depending how long ago her last one ended that could well still be on her mind sometimes.
You sound decent and considerate, and I don't doubt that if you hang in there and just give it time, she will learn that she can rely on you, all men are not the same, and so on.
Also people do take different amounts of time to fully open up, don't worry, it doesn't mean anything is wrong. Just be there for her, reassure her with words as well, and she will start to be more comfortable with you. Best wishes
You sound decent and considerate, and I don't doubt that if you hang in there and just give it time, she will learn that she can rely on you, all men are not the same, and so on.
Also people do take different amounts of time to fully open up, don't worry, it doesn't mean anything is wrong. Just be there for her, reassure her with words as well, and she will start to be more comfortable with you. Best wishes