The squishy healer type suddenly presenting himself as a target is indeed too tempting for the ghost to pass up. It reasons that if it can eliminate their ability to heal the negative effects it can cause, they won't stand a chance.

It lashes out with a shadowy arm, striking at Billy and trying to knock him to the ground. It misses the quick little moogle darting in until it's too late. Celes snatches the doll from it's grasp and it roars.

"NO! I WON'T LET YOU!!!"

It tries to grab the moogle. Now may be their best chance to hit it with everything they have...