How old is she? She could be a little young. . .night terrors tend to hit after 1 year. OTOH, she probably didn't read the book that says that.

Try not waking her and just observing and see what happens. When little kids have night terrors you make it much, much worse by waking them up. My general thought though is that it's probably something else bothering her at this age. But if you leave her be and she settles back into sleep easily without fully waking up then perhaps. . .