I agree, she's a Delaware.
I once had a Buff Orp hen that was blind in one eye. She got along with the other birds okay and did just fine. However I wouldn't recomend free-ranging your hen, at least not without supervision, because when our Pyrenees pups got to the playful age the blind Buff Orp apparently didn't see them and was caught off guard and they "played" with her, probably for a half hour or more before I went down to the barn to collect eggs and noticed the pups with a chicken. The poor girl didn't have any puncture wounds or broken bones but was about half plucked and sopping wet with saliva and quite traumatized when I found her. She seemed to fully recover though within few days, minus still being half-plucked. She was the only chicken the pups ever got a hold of out of 60+ free ranging. Other than that little episode, the blind hen did just fine and I later sold her along with the rest when I needed to clear out that coop.