Going blind would be anxiety producing for any of us, give her a little time. Our dogs are so resilient and adapt so much better than we often do, with time and your help she will adjust.
My best advice would be to keep using it in the context of her being in a safe place. Apply and then sit with her a bit and comfort her and be there with her. As a Springer her sense of smell and hearing are even stronger and they will kick in to help her.
We've had blind dogs over the years and by not moving the furniture around and making sure they had a clear path to get around helped them adapt.
With such a huge life changing event as going blind, she is fortunate to have someone like you to help her adjust and feel secure.
Let us know how she does, we're sending our best.
Kathy & Everyone at The Blissful Dog