She give a sharp yip of some kind (which would have been something like a squeak in her own voice) in response, initially attempting to block the 'attack' but failing because of the close quarters and lack of familiarity with her current body. Her hands made to find his to keep him from beating her about the head, landing at the elbows. Her eyes went wide at the kiss, utterly dumbfounded by Greed's actions.

Needless to say, if he had wanted to shut her up he certainly found the way.