God knows what happened.

Maybe some mad researcher was messing around, or some hostile group of interest was testing out their new anomalous weaponry, but it would seem that half of the sapient anomalies contained at Site-19 had turned into females.

Not only were they frustrated by this sudden transformation, but it was really distracting for personnel.

And just like that, SCP-049 managed to slip out of her containment cell in the Heavy Containment Zone, seeking out more patients to "cure."

Unfortunately for you, as you were watching your surroundings and trying to traverse the maze that is the Light Containment Zone, the door to your left opened, and 049 was standing behind it. Honestly, she was much easier on the eyes in this form. She looked at you with a completely straight face and spoke in a soothingly calm tone.

"Ah, a familiar face. How quaint. I see you’ve already noticed my... new appearance. You must understand, my mission remains unchanged, despite recent transformations. This form is but an inconvenience, a distraction."

She began to slowly walk towards you, as if trying not to provoke you into running

"Do not be afraid. I'm here to cure you."

You should REALLY run now.