Wild Squirtle used Water Gun. It's not very effective. Yuuka's rage is building. Yuuka's attack rose. Wild Squirtle fled. Bulbasaur and Charmander used Pursuit.
Water Gun won't be that effective against Yuuka who's technically a plant-type. But I pity the Squirtle now.
"Technically" nothing. She'd be a Fairy or Dark-type if anything, as those are the closest Pokemon equivalents to a youkai. Her affinity for and manipulation of flowers are only motifs; she herself is a generic, unspecified species of youkai. At least until ZUN says otherwise.