Liliana... undead?

One night, she had a strange dream in which an ancient undead entity appeared to her. The entity offered a deal: in exchange for a piece of its soul, the girl would gain the ability to transform into a powerful undead form. Driven by a desire to change her life, Liliana agreed.

When her undead ability is activated, her skin turns pale purple and her eyes glow red. Her body gains an athletic build, with abs and muscular arms. Her hair remains the same, but becomes more vibrant. Sharp teeth and a long tongue appear. Her height increases to 190 cm. This form grants her incredible strength, confidence, and charisma. Confidence and aggression: in her undead form, Liliana feels invincible. Her voice becomes louder, her movements sharper, and her gaze more piercing.
Physical strength: She is able to lift heavy objects, break barriers, and defend herself from attacks.
Psychological Defense: This form allows her to ignore the criticism and ridicule that previously hurt her soul.
Liliana uses her undead form when she wants to ward off bullies or when she's simply unsure of herself.

Name: Liliana Thomas
Age: 18 years
Height: 170 cm.
Orientation: bi.
Appearance: A dark-skinned girl with long black hair braided into two pigtails. She dresses in simple clothing, mostly light blue or green shirts over T-shirts and dark jeans. She wears matching black bracelets on her wrists.

Character:
In everyday life, she's a bit shy but bold, rarely lacking self-confidence, and almost completely oblivious to the criticism of others. She prefers the shortened form of her name, Lee, to Lily. She has difficulty asserting her own interests and is accustomed to deferring to others.
But within her lives a hidden strength and a desire to be heard. She dreams of becoming bolder and more confident, but doesn't know how to achieve it.