Night terrors or bad dreams?

my 3 year old daughter has recently started waking up several times a night crying, when we approach her she doesn't seem to notice us her eyes are wide open but she won't focus on you. when we ask her whats wrong she will answer and say something like "i just cant do it" and no matter what you say to her she will just repeat the same phrase. sometimes its wheres my nemo that's her teddy, but she is actually holding him already. normally i tell her to lie down and she calms down after a few minutes and goes back to sleep, this happens sometimes 3 to 4 times a night.. does this seem like night terrors.. i didn't think it was, she doesn't remember anything the next morning.. have anybody experience this with their kids, i am starting to worry about her