big sister. she liked being the oldest, being in charge and teaching them all of this cool stuff. reporter: she was wanted, happy, making memories. opening gifts on christmas morning.ft her first trip to the beach. not that everything was perfect, mind you. there was still definitely a i m going to test you. as much as you say you love me and you re keeping me, i m goiny to make i don t believe you.- how would she challenge you, for instance? just the quintessential, i m not going to do what you say. i m going to do whatever i want. reporter: so psychological m tussle going on here? uh-huh. reporter: which only intensified when annie entered her teen years. she was about as boy-crazy as i could imagine. she always had a boy that she liked or that liked her. and it was never a, here, let me see. it s a, oh, i m so in love with you. this is forever.ke i couldn t imagine anybody being more amazing. she was very all in. reporter: but annie was also into her education a