- The entire emotional ordeal (and dismal failure) for Melody at her own 12th birthday party. She's already considered strange by her peers, and her parents' encouragement before the party eases her worries and helps her to believe that everything will be alright. But disaster strikes (through no fault of her own), she's utterly humiliated, everyone laughs at her and she flees the ballroom in tears. Seeing her crying alone in her bedroom afterwards is difficult to watch.
Melody: (crying) What's wrong with me?Ariel: (sadly) Nothing's wrong with you—Melody: Mom, I'm the princess of disaster!
- Ariel trying so hard to console Melody, but to no avail.
- It's pretty sad to to hear about Morgana's unfavorite status with her own mother.Morgana: (to the sky after besting Triton) See that, ma!? WHO'S YOUR FAVORITE NOW!?
- At the beginning, when Ariel decides it's best for Melody's safety to not know anything about the sea. Possibly more tearjerking is that keeping Melody ignorant is exactly what leads her into trouble. Imagine that as a parent: you do what you think is best for your child and your actions turn out to be more harmful than helpful.
- Also poor Triton as this meant that he is going to have to avoid his own granddaughter and his daughter for his granddaughter's safety.
- Ariel finding out Melody ran away, and her realizing it's her fault for doing so.
- Dramatic Irony kicks in when you realize that Ariel keeping Melody from the sea is almost exactly the same as Triton keeping Ariel from the surface world. And just like back then, it led to a young girl getting tricked by a sea witch into giving them something they want.
- The image of Melody being changed back into a human while in the cave and nearly drowning as a result.
Tear Jerker / The Little Mermaid II: Return to the Sea