After that few hours of bliss, you head to the kitchen for a glass of water, only to see your mom, half naked, standing in the rain, and banging on the window.
After getting over the initial shock, you let her in and see she has something important to say.
She dries off and tells you that she's your girlfriend Miko, and your mother tricked her into trying out some of her clothes when she decided to visit and used some medallion to change her, and then your mom stole her clothes and life.
She describes the medallion to you, and answers a few personal questions about Miko, and after a while, you're entirely convinced.