Let me guess, Healer Girl trys joining up with him later, once she realises how God damn weak the Hero probably is, though its obvious he's literally trying to build a Harem and isn't even trying to hide it.
Honestly that Healer not joining up would be the preferable outcome, since that'd just make her a big hypocrite. She didn't exactly try to really fight his case, nor did she go with him even though she could have, considering she was the one to invite him in the first place, oof.