Per my experience w/ special needs pets and children (hope no one took offense to that lumping)….
Many blind animals/people rely on their mouths to identify their surroundings (i.e. kids not really adults). Just like babies that put everything in their mouths to establish identity and relationship w/ objects…remember that babies have very poor site during the oral stage. B/c dimensionality, etc. is impaired oral exploration is very common.
For animals when one sense is impaired they often see biting as 2 fold. It helps w/ identification through taste and sense and it helps keep bad people/things away. I recommend making use of other sensory skills, ie. using various taps to identify that you are going to pet her, feed her, enter her cage, etc.
I one had a blind/partially deaf kitten w/ neuro impairments. She only lived for about 5 months, but her life was very full during our fostering. I used to drum, sing, and tap to talk w/ her and give her instructions (vibrations and some tones can be heard and felt).
Good Luck w/ Gracie Baby!