What happen is that when your aunt was here visiting for the week when here baby had shit in the diaper. You remember that they had used one of your brothers diapers. Until they had gotten her daughters washed. We also find that reality rewrites itself so the new person won't seem strange to other people. We see that you have gone into your room and pull the ring on and then touch the diaper. It was after you had looked in the mirror that you realized that it wasn't Alex but your 9 month old niece. But you noticed that where your niece's hair was red that your hair is still the same color.
Just then you hear your sister coming out of the bathroom but is now heading to your room. It was at the same time you blinked and when they open you notice that your room has a crib but that it also is that of a teenage girl.
When Jamie comes in she now isn't 12 but looks closer to 17 and see that her breast have become really big. She then picks you up and takes you out and sees that your family photo had changed. You don't see yourself in it but that you notice that the photo looks to be the same one as before. You remember that the family photo was taken about a year ago it's then that you see that Jamie is stanging in back of your mom and the others.