While mostly people might be scared by the lashing out, Belle was just more wary than anything. She still had her memories of how the Beast had been, how angry and how convinced she was that he'd kill her. She also had other Belle's words, asking if she had gotten to know him beneath it all. Which was, well, given that day, it still made logical sense why she had reacted as she had. So if the anger lasted longer than comfortable, Belle would find an escape strategy. But it was short lived and so she just nodded. After all, it wasn't every day someone finds out they have no way home and were brought here by the Seals of Hell.
"Its fine, I know its a lot to take in." Folding her hair behind her ear, Belle was about to continue on when she got the name. Of all the people she had found. She had to find Regina. Normally it wouldn't be a matter. Or it wouldn't have been if she hadn't been close to Emma and Henry. But she knew that she had caused pain in their lives. And she now realized the reason she looked familiar was because she was the Evil Queen in Henry's book. Which meant she should really figure out a course of action as she knew the Complex was undoubtedly out of the question and there really was no reason to take her there only for her to get kicked out. Okay. Headache. But first... answering questions.
"Belle.... as for what they are, they come from the Christian Bible. Lucifer was locked in a cage by sixty six seals. They got broken somehow, one of which has the ability to bring people from different times and places and even worlds."
Saying her name was probably dangerous given other Belle but it was pretty obvious they weren't one and the same. Besides, she had left the door open to discuss the different worlds thing if necessary. She'd be fine. She knew that Regina was clever and dangerous, and while Belle really did prefer reading to interacting with people as they tended to have mindless conversations, she was still fast on her feet when it came to figuring things out and assessing a situation.