Damon thought about it and decided to let the mermaid help them.
As poetic as it would seem for Damon to remain a shark for the rest of his days for flirting with a royal princess, he just couldn’t bring himself to abandon his mission and, most of all, deeply hurt Charlotte. He wanted to be a merman again.
“I believe you, please take us to the sea witch. I want to be turned back to normal again.” Damon said to the mermaid.
The mermaid smiled at the words, “Thank you, Damon. I’m glad you still want to cooperate with me after everything I’ve done.”
“Not so fast,” said Charlotte. “If Damon ever turns back into a merman, I don’t ever want you to ever get involved with me, Damon, or my parents ever again!”
The mermaid was surprised at Charlotte’s harsh words. “But why?”
Charlotte became cross, Damon could see her beautiful features suddenly turned threatening as her nails became long, her teeth sharp, and there was cold fury in her eyes. Charlotte now resembled an angry siren, ready to tear off the mermaid limb from limb. “Why?... Why?! You called me out once I had my eyes on Damon, you then ratted out the feelings I had with Damon to my parents, and now it’s because of you that Damon is a shark in the first place! For once in my life, I had a boy to love and you just caused him to be banished from my kingdom forever! You ruined everything!” Charlotte yelled with the most feral and hateful voice.
The mermaid paused upon hearing those harsh words. Her eyes became misty and tears fell from her as eyes just shortly before being swept away by the sea. Charlotte was right. Damon was once a hopeful prince with a goal to bring peace between the human and the merfolk, it was then that he found love with a mermaid princess and kissed her body - not out of simple sexual pleasure, but out genuine love for another person not forced by any parental figures or pressure to preserve a kingdom’s legacy. But the mermaid’s actions not only ruined Damon’s mission but tore the lovers apart. The mermaid sobbed. If she hadn't told the King and Queen, none of this wouldn’t have happened - she covered her face in her hands and cried.
Damon was shocked, he had to speak up. “W-wait a minute, Charlotte!”
Charlotte’s once terrifying appearance suddenly turned back to being beautiful upon hearing Damon’s voice. “Yes, Damon?”
“I know you’re angry, and you have every right to be. But it was because of the mermaid that I turned into a merman in the first place.”
Charlotte gently caressed Damon’s snout. “Damon…”
“Don't forget, it’s because of her that we’re together. If she hadn't told me that you were looking at me, I likely wouldn’t have fallen in love with you.” Damon said, rubbing his snout against Charlotte’s torso.
Charlotte gasped and felt a wave of guilt crash upon her. She swam towards the crying mermaid and hugged her. “I’m so sorry for hurting you. I was so angry that I forgot you helped me find the love of my life. Thank you so much for everything. Please forgive me.”
“It’s okay.” The mermaid said as she sniffled and rubbed her eyes. She felt better. “Thank you, Charlotte. I promise I’ll get Damon back to into his merman self. I’ll never give up on the two of you.”
After a long and comforting wait, Damon and Charlotte soon followed the mermaid’s lead to the sea witch’s lair.