I think that she should and will get the use of her legs back. If you have seen the promo poster for Battle of the Cowl where Robin, Nightwing, Two Face and Jason Todd are all in Batman suits you can see behind Tommy Elliot (HUSH) and Damien there is a wheel to a wheel chair and it looks to be in pretty bad shape as if it is no longer used so either she is going to do or walk, that is my guess. I hope it's walk though. I do think that if she does get the ability to walk back then she will take up her old Batgirl Mantle. Perhaps the use of her legs wil reunite her with Dick and she will want to work side by side with him. Just a thought of where they may take this.