[@Shoryu Magami]

While this is true, Kefka is at his highest tier as of now, giving he was taken from the World of Ruin. Terra dying, at this point, isn't a huge thing for Kefka; So having a little fun isn't going to hurt anything. (He could also destroy his beast at will, preventing her death if he really wanted to make her suffer.) Though I am certain Mateus could convince Kefka that capturing her is for the best; Mainly through suggesting that she herself could be sent to destroy the other Warriors of Cosmos. Kefka would get a kick out of it, and then Mateus could have Zidane play fetch. 

WoB is getting raided, man. While Ritz is on the weaker side of the heroes, she's still pretty capable on her own terms; Jegran would be the biggest problem for her out of those entering the battle.