As strange as it may be to switch things up when I have two water-types out already, I would like to switch Evil Queen the Feebas out and send Mother Gothel the Ralts in. Since TalkingLion cannot counterswitch at all, I'll just order:
Mother Gothel: Heal Pulse (Wailmer) - Thunder Wave (Growlithe) - Heal Pulse (Wailmer)
If Growlithe uses Crunch at all, change action 3 to Torment (Growlithe)
Monstro: Scald (Growlithe) - Water Pulse (Growlithe) - Hydro Cannon (Growlithe, item box)
If Growlithe uses Dig, use Chill on that action.
Mother Gothel: Heal Pulse (Wailmer) - Thunder Wave (Growlithe) - Heal Pulse (Wailmer)
If Growlithe uses Crunch at all, change action 3 to Torment (Growlithe)
Monstro: Scald (Growlithe) - Water Pulse (Growlithe) - Hydro Cannon (Growlithe, item box)
If Growlithe uses Dig, use Chill on that action.