User blog comment:Vitalius/The return of Oración Seis and Crime Sorcière/@comment-4829046-20131022143015/@comment-7418318-20131023114917

Well... Gajeel did suggest that Natsu should use his flames to melt some of his iron to weld the crack that they caused in the petrified Erza...

But considering how Natsu isn't burning himself with his flames, I'm sure that if Gajeel absorbed Natsu's flames he could use them without harming himself... that is IF he can absorb them. We don't know if there's a limit for how many elements the Dragon Slayers can take into themselfs.

But I'd certainly try to make Wendy absorb another element, preferably one that boosts her offensive abilities.