Disclaimer: you know the drill. I don't own any of this!
Sebastian paced outside the cave. "I didn't mean to tell him, it was an accident and…" His sentence was cut short as he and Flounder saw Galinda swimming over them with the eels. "Galinda?" He swam in front of her. "Galinda what's the meaning of this?"
"I'm going to see Morrible." She said shortly.
He grabbed her fins. "What?! She's a monster! She'll use you!"
"Why don't you tell my father? You're very good at that." She flicked her fins, knocking him off and swam after the eels.
"But I…Come on!" he said to Flounder as they swam after them.
As Galinda got to the lair, her face fell and she shrank back slightly.
"This way." The eels said in unison. Galinda gulped silently and swam in slowly.
"Come in my child. You mustn't lurk in doorways, it's very rude," Morrible said as she crawled toward her. "People will question your upbringing, princess." She said as she chuckled. "So you're here because you are in love with this human girl. Well the solution is simple; the only way to be with your human is to become a human yourself."
Galinda gasped. "You can do that?"
Morrible smiled evilly to herself before turning to look at the mermaid. "My dear, that's what I live for, to help unfortunate souls like yourself," she slinked over to her cauldron, using her tentacle to pull Galinda over with her. "Now listen, I have a spell that will make you human for three days and before the sun sets on the last day, you have to get your human to fall in love with you, which means you have to kiss but not just any kiss. The kiss of true love and if you succeed, you'll remain human forever but if you fail, you'll turn back and you'll belong to me!"
"No Galinda!" Sebastian tried to warn her but he and Flounder were silenced by the eels.
"Do we have a deal, princess?"
"If I become human…I'll never see my father again."
"That's right but you'll have your love. Life is just filled with tough choices, isn't it? Oh one more thing. We need to talk discuss payment. You can't just get something for nothing."
"B-but I don't have any money." Galinda said crestfallen.
"I don't want money. What I want is a mere token. You won't even miss it. What I want is your voice."
Galinda touched her throat. "My voice?"
"You got it. No talking or singing."
"But with my voice, how can I get..."
"You'll have your looks and don't underestimate body language! HA! People on land don't like a lot of talk but they swoon over a woman holds her tongue!" Morrible said as she started to throw things into the cauldron. "Make your choice. It doesn't cost much just your voice. Sign the scroll if you want your love." She said as she made the unbreakable scroll appear with the quill.
Galinda hesitated but she grabbed the quill and signed her name. As soon as she signed, the scroll disappeared.
Morrible smiled evilly and started chanting over her cauldron. Suddenly two dark green hands appeared above her. "Now sing!" she commanded the mermaid.
Galinda took a deep breath and started to vocalize. One of the hands went in her mouth, down her throat and come back out with her voice. Her voice floated into the shell necklace on Morrible's neck. Galinda was trapped in a bubble, her fins changing into human legs. The bubble popped and Galinda was thrashing around, trying to breath.
Sebastian and Flounder rushed over and helped her swim to the surface, Morrible's cackle slowly fading. Galinda surfaced, letting air fill her human lungs. She looked at her surroundings as Sebastian and Flounder helped her to the shore.