User blog comment:IamJakuhoRaikoben/Chapter 466: Assassination, Review./@comment-26389992-20151222030135/@comment-7418318-20151222114205

I think it's almost asured that she'll become one of the good guys, but that doesn't necessarily mean she'll join FT.

Sure there are Juvia and Gajeel... and in a way Mest (though he never was a real villain, just an antagonist and even there just a very minor one), but all the others stayed out of FT after their redemption.

All the Sabertooth members stayed in their guild, the ToH people either joined other guilds or stayed independant, Jellal, Ultear and Meredy formed Crime Sorciere and the Oracion Seis also joined them later.

Going by that tally, the chances are actually bette for Brandish to not become an FT member.

Maybe she'll join the Ten Wizard Saints. She certainly fulfills the power requirements easily. ^^