When fighting this enemy by herself, it is sufficient to send out only an occasional Manic Mohawk Cat to trigger her attack animation. As long as no units with a range under 240 are deployed during her attack, she will be unable to produce a Shockwave, making her much less of a threat. When there are other enemies on the battlefield, then just enough meatshields must be deployed to keep your backline attackers safe without allowing her to hit anything with her last attack.
It is ill-advised to use Metal Cat or other meatshields/close-ranged attackers that can survive the first two hits of Crazed/Corrupted Moneko's attack, as they can easily give her a chance to unleash her Shockwave. The only Wave Shield that won't backfire on the player is Eva Unit-00.
Time between attacks
240 (Area Attack)
Multi-hit attack (20,000 at 4f, 20,000 at 19f, 20,000 at 139f)