Is it normal for your gf to sleep-talk about being scared of someone?

Do all-night talkers do this? It happens a little too often and I am concerned it might be a form of PTSD. Should I talk to her about it? What should I do?. She has never mentioned any trauma but it is pretty early in our relationship so maybe she just feels like she is not ready yet. She tends to flinch when someone holds their hand up and that is something I, who has been through domestic abuse do a lot. How can I handle this and help her without making her feel bad? I am not really good at handling people's feelings, I can barely process my own.