Chickful A has a 25% chance to freeze your cats, as well as high attack power and range, with pretty much well-rounded stats across the board. Her health is lacking, but that doesn't matter to much since she attacks fast to try and prevent any cats from being able to get to her in time, this is more noticeable when there are two or more Chickful As de-synced.
Most mid-rangers such as Cyborg Cat and Macho Leg Cat will be outranged, but a Dragon Cat should be safe. Rushers such as Fishman Cat, Awakened Bahamut Cat and Maglev Cat are still usable against her, but need timing to land a hit. Rushers will work a lot better if they have enough time to knockback Chickful A before she attacks if timed well. This way, they won't get hit by Chickful A in the process and be able to (hopefully) defeat her in one go.