Would you like to go on a journey?

3 6 3, I'll avoid the Rock Throw, eat the Bite and take the Screech after the fact since the order appears to be that. Beira steels herself after the Bite and Screech land and Katara commands her to keep going. "Icy Wind, one more time!".

3 and with -2 Defense stage means my Defense gets slashed by half. Given that I was already in a vulnerable state, Beira doesn't withstand the blow. Katara recalls her and thanks her for the effort. "There's a reason you're my nemesis...", Katara mutters as she throws out Amphitrite. "Amphitrite, Quick Attack!"

4, hence Defense cut in half. "Amphitrite, finish it with Covet!"

Exit the cave and head to the next town that I assume has a Pokémon Center and Mart. Might peruse the Mart after a Center visit.

Do you know where I am?