In my experience, animals are much more adaptable than people. We tend to think about what we had and lost; they tend to move forward with their new reality. It may take Lizzie a little while to adjust, but she has someone who cares for her and will help her.
I have had a multitude of "handicapped" pets -- from an eyeless cat to a deaf dog. Currently, Sally -- a barred Cochin Bantam -- hops around remarkably quickly on one leg.. Surgery removed a stricture wound to one of her legs; that leg is now featherless and fairly fixed in its position. Yesterday, one of the full-sized hens decided to steal Sally's grape. Fearless little Sally chased Evie, grabbed hold of the bigger girl's feathers and held on with a death grip.
Lizzie will learn to find her new normal, too. Best wishes for her.