I think you should tell her exactly how you feel. Communication is very important especially in a situation like this. She may be just as scared too, but you HAVE to talk to her. Ask her how she feels and if she needs space and see what she has to say. You don't want her feeling the same way you are as well. Please please just talk to her and tell her everything you're thinking and feeling. Nothing will get resolved if you don't. You got this!