Right now, we're discussing Misty's life before Ash.
As for my own theories, fine, fine. But don't say I didn't warn you. Firstly, you have to understand a few things about my shipping beliefs. I'm an Eldershipper and believe Oak to be Ash's daddy.
Anyway, before Delia and Oak got into their own hot n' heavy romance, Delia was married at a youn age to some unknown. She gave birth to three girls, the eldest being Daisy. After a while, when Daisy was 14, she got pregnant and gave birth to a girl by the name of Misty. Delia, who was by now divorced, kicked the three sisters out, and Misty along with them. Daisy, to avoid any nasty questions about fatherhood, raised Misty under the pretense of being her sister. And so, that all worked out, Misty ran off with her younger uncle, so on and so forth. Daisy's squeeze and Misty's dad? Unknown, I'm reviewing characters trying to find similarities between Misty and some older guy.