Ariel might have a more conflicted personality. On one hand, she has her natural mermaid - like kindness and curiosity which are inborn traits. But on the other hand, Ursula's teachings of self - interest and using others would also be a part of her. So she would constantly be in a struggle between her true self and the self that Ursula is trying to shape.
She could be more assertive in a rather dark way. Ursula is a very dominant character. Ariel, growing up under her influence, might not be as gentle as in the original story. For example, when it comes to getting what she wants, she might use more forceful or underhanded methods, rather than her pure - hearted charm in the original.
One possible plot twist could be that Ariel, while being raised by Ursula, discovers a hidden power within herself that Ursula was trying to keep dormant. Maybe it's a special kind of magic that can break Ursula's control over the sea creatures. This would lead to a power struggle between them as Ursula tries to regain control and Ariel fights for her new - found freedom and the rights of the underwater world.
One common theme is redemption. Since Ursula is often seen as a villain, many fanfics explore her path to redemption, especially in relation to Ariel. Another theme is the power of friendship. Despite their differences, they can form an unexpected bond.
A different way to develop their relationship could be through a magical accident. Let's say a spell backfires and Ariel and Ursula's minds are swapped. They have to live in each other's shoes for a while. Ariel experiences Ursula's loneliness and the reasons behind her actions, while Ursula gets a taste of Ariel's kind and curious nature. This could lead to a more empathetic relationship between them.
Some fans would be excited. They love to see unexpected pairings and new interpretations of characters. It would be a fresh take on the relationship between Ursula and Ariel, and those who enjoy exploring different relationship dynamics would be all for it.
Ariel might become more assertive. Since Ursula is a strong - willed character, being with her would make Ariel stand up for herself more. Ursula, on the other hand, could become more empathetic. Ariel's kind nature might soften Ursula's harsh edges.
Ariel's own strong will also contributed to her escape. Despite being in Ursula's clutches, she never gave up hope. She constantly thought about her family, her friends, and her love for Eric. This inner strength gave her the courage to fight back against Ursula's magic, and eventually find a way out of the difficult situation.
An interesting Ariel and Ursula lemon fanfic often has well - developed characters. Since Ariel and Ursula are very different in the original stories, seeing how the author explores their relationship in a new context can be captivating. For example, if the fanfic delves into Ursula's backstory and how it might influence her interactions with Ariel in a more adult - themed relationship. Also, a unique plot that deviates from the typical good - vs - evil dynamic can make it stand out.
One common theme is redemption. Ursula is often seen as a villain in the original story, but in femslash fanfics, she can be redeemed through her relationship with Ariel. For example, Ariel's kindness might make Ursula question her evil ways.
Flounder would be completely shocked. He's used to Ariel's kind - hearted nature and her love for Prince Eric. So seeing her kiss Ursula would leave him speechless and confused. He might try to talk to Ariel privately to understand what's going on.
I've heard of 'Ursula's Hidden Heart'. It's a fanfic that reveals a softer side of Ursula that only Ariel seems to be able to see. It's a really heart - warming take on their relationship.