What would the Disney Princesses be like as warriors?

Ariel is my favourite princess, so I'll do her.
She'd still have the smooth red hair, because that's what makes her iconic. Her weapon of choice would be a trident, and secondary weapon, I see as either a spear or harpoon. She'd wear a bodice of armour, rather than just a bra, and have a little skirt of it, with high boots to protect her Achilles tendon.
Her backstory would be something along the lines of accidentally abandoned on a relatively large island as a small girl, but she believes she was put there on purpose. As a result, she learnt to fend for herself, using tridents and spears to fish and hunt. One day a ship landed at the island, and a handsome pirate convinced her to come aboard, as they could use her fighting skills in combat.
I seriously have no idea, but that's what I think it'd be like. Interesting question