Your baby's fear is natural and to be expected. She has not yet 'mapped' and this will happen very quickly. You can scent different areas (something I have never had to do despite having a born blind, two born deaf and blind, a old guy deaf and can barely see. That map will happen very quickly. In the meantime babygate all stairs, don't move furniture, don't leave vacuum out in middle of floor and VISIT THE BLIND STICKY in this forum. There are a TON of tips in there, for blinds for any reason. Your attitude, silly happy joy, which you can convey with tickles on the side of the head, will comfort her and let her know you are in charge and eerything is fine. Get down on the floor with her and map. Watch out for pokies and owies.
All my deafs, blinds and deafblinds have acclimated waaayyy beyond the human's ability. She is mapping and it iss to be expected she will bump into things until they are mapped. Turn off the lights in a room you know like the back of your hand and I GUARANTEE you will stub your toe.