She could be shocked at first. After all, Merlin has been hiding his magic for so long. Maybe she feels a sense of betrayal initially, but then she might see an opportunity to have an ally in the world of magic.
Their relationship could develop in a complex way. If Morgana ties up Merlin out of anger or suspicion initially, but then realizes she was wrong, it could lead to her feeling guilty. This might make her more open to Merlin's friendship in the future, and they could gradually build trust.
The 'fata morgana short stories' could potentially explore various themes. It might delve into the psychological states of the characters, as the concept of fata morgana can be related to distorted perceptions. The stories could use this as a metaphor for how people perceive themselves and others in different situations.
She might be shocked at first. Given that in the original story Morgana has her own complex relationship with magic, seeing Merlin's magic could stir a mix of emotions in her, like envy or a sense of relief that she's not alone in her magical abilities.
One great 'Dark Merlin Morgana' fanfiction is 'The Dark Alliance' which delves into their complex relationship as they form a powerful and somewhat menacing pact in a world filled with magic and political intrigue. It's really interesting to see how their characters evolve in this darker setting.
A really interesting 'Kayle x Morgana fanfic' is 'A New Beginning'. It starts with a scenario where both sisters are forced to re - evaluate their relationship. The fanfic has some great character development for both Kayle and Morgana. It also has a unique plot that keeps you hooked from start to finish, with lots of action and emotional moments.