. >> yeah, we went to skateland.'ve always been pretty good at roller skating, so i was going around doing my own thing. >> we were at skateland having a good time. >> did you guys talk about the plan at all? >> nope. >> reporter: payton had no idea that the other two girls had been planning, had been plotting. and what was supposed to be sort of a typical, joyful slumber party was instead really a dark plan to try to lure payton in. what were you expecting these young girls to be doing? >> well, payton brought her american girl doll. i think back to when i was 12, i played barbies at sleepovers. so that's what i expected to be happening, playing with dolls and spending some time on the internet. >> they played up in morgan's bedroom, ran up and down the stairs giggling and laughing and, i mean, it was just a normal night. >> i wanted to give her at least one more morning. >> the next morning then they wake up, they have breakfast, they played games, they then go to the park. >> "we're going to do it today at the par