He lied to make her obey

'Come Katie, daddy is waiting.' the stranger said.

Katie smiled. She stood up from the cold chair and grabbed the man's hand. He was taking her to her daddy.

'Sit down Katie. I will get you your daddy.'

Katie frowned. She didn't understand why the man had to lock her to the chair again. She looked at the man in the dress. He was standing far away.

'Computer. Begin removing all long therm memories in the pueritia cortex.'

'Brain scan complete. Removing memories will start in 5...4...3...2...1.'

Then there was the buzzing again. But this time nothing was covering her eyes.

'50%'

Her head felt weird_. _As if water was washing the dirt away. Katie liked it. Her head felt really light now.

'100% Total childhood memory removal complete.'

She had forgotten something important, but she din't know what it was. She was waiting for her daddy, but she couln't remember what he looked like.

'Are you my daddy? She asked the old man in the dress.

_____________________

Sidenote: I hope it is clear the white dress is the labcoat. Katie doesn't understand what that is anymore.