(...Was this another way to teach her a lesson, hidden behind their Pokemon? She gave it some thought, reminded about Blaze's strengths and weaknesses of special and physical attacks a la Twilight.)

Obviously pure firepower alone won't win 'cause we're facing a Water type. So, keep Blaze away from the water attacks by using Fly while hitting back with moves like Tackle, Slash or even a powerful Fighting type move I read about on the Pokedex...Seismic Toss, with a from-the-air Hyper Beam for the win!