Board Thread:Questions and Answers/@comment-27836345-20160221055228/@comment-27392440-20160503230843

Chad only admitted to feeling a "rustling" during the fight after he could make sense of it, Orihime is similar when you realize her powers seemed to be stronger after her time in Hueco Mundo (it could hold back Ulquiorra's pre-resurreccion attack during Ichigo's fight with him and even brought someone that looked dead back to life, both things seemed impossible before her time in Hueco Mundo), she just may not have had something to stimulate her like Chad's fight did with him.

The problem with saying her mother wasn't attacked by a hollow is twofold: 1. Ginjo was both untrustworthy and not in his right mind thanks to Tsukishima so you can't read into that Orihime wasn't invited to Xcution (her power may have been able to remove Tsukishima's which would explain both why she was kept out of it and why she was the first target Tsukishima went after, so her power couldn't be used against him), 2. Chad's parents were never canonically said to have been attacked by hollows either yet Ginjo's words alone confirmed him as one, even though Chad didn't even know his parents may have been attacked so Ginjo couldn't have known. It's very possible Orihime might not be a fullbringer but she fits the criteria about as well as Chad except for having Ginjo confirm her as one (and to be honest, I don't think many would have thought Chad's power was fullbring until Ginjo said it was, so it's fair to predict Orihime is one too)