Turn her into an anthropomorphic bat

Mr. Mxyzptlk waved his hand whimsically, and a surge of celestial power pulsed from his fingertips. An ethereal glow enveloped Batwoman, and her world became a disorienting kaleidoscope of colors. Her consciousness flickered like a faulty light bulb, reality ebbing and flowing as Mxyzptlk's magic worked its unfathomable process.

Her bones ached, her skin tingled, and her muscles throbbed in a series of sensations. It was as if every fiber of her being was being reshaped, reforged, and redesigned.

A primal fear coursed through her as her body began to change, but she fought to stay calm, her mind desperately trying to stay afloat amidst the chaos. She felt her ears elongate, shifting upwards towards the top of her head, the cartilage folding inwards to form a pointed, bat-like shape.

Her sense of hearing heightened exponentially, the far-off whispers of the night becoming crystal clear symphonies in her ears. The city's hums and murmurs, once a barely audible hum, amplified, their waves reverberating within her newfound ears.

Her skin began to tighten, her body heat intensifying. When she looked down, her pale skin was replaced with a soft layer of velvety, dark fur. The fur spread like wildfire, covering her arms, legs, torso, and finally, her face. The once familiar features were subtly altered, her nose becoming slightly more pointed, her eyes growing slightly larger and taking on a new glow that seemed eerily luminescent in the swirling magical light.

Fingers and toes elongated, growing slender, and tipped with sharp claws. The palms and soles of her feet became leathery, a texture reminiscent of a bat's wings.

But the wings… those were the most significant change of all. A sensation of sprouting erupted from her back, a pair of wings unfolding like a night-blooming flower. The wings were large, impressive, their span easily double her height. The membrane between the bone structure was thin yet incredibly strong, a mesh of veins visible beneath the dark, almost translucent skin.

Her suit stretched and strained to accommodate her new shape. As her chest swelled, the iconic bat symbol on her costume split down the middle. The fabric around her shoulders and back tore open to make room for her wings, the torn pieces fluttering to the ground like discarded feathers.

Around her waist, the utility belt buckled under the strain and snapped open, the contents spilling onto the street below. The boots and gloves, once fitting like a second skin, were reduced to shreds as her new claws made their appearance. The pants of her suit fared no better, tearing at the seams to make room for her fur-covered legs.

Batwoman - no, Woman-Bat - dangled in the air, caught in Mxyzptlk's ethereal chains, her once human form now an anthropomorphic bat.

"Feelin' a bit batty, are we?"

The imp cackled, the chains blinking out of existence.

"WHAT DID YOU DO TO ME?!"

Kate snarled, her voice gravelly and piercing, though still distinctly effeminate. She lunged at him but he simply vanished and reappeared.

"Oops! Missed me! Try again!"

"Hold still!"

"Missed me again!"

The imp taunted her, warping away as soon as she got close.

Police sirens blared. Red and blue lights flashed, growing brighter as the cops arrived on scene.