>> reporter: the wind on the prairie is a fickle thing, like people sometimes are. is that why angila wilder's fiance, chris, was so angry? >> richie is probably the -- piece of -- who did it. >> reporter: there was a history to this. long before that november morning in 2015, and far away from minot, north dakota in alabama. angila met richie at church. they were the best of friends as kids. and, after angila had a baby as a teenager, it was richie who scooped her up. married her. adopted her little girl. and before long they had a boy of their own. all witnessed by angila's sister, crystal. >> she tended to date guys that were funny, that were gentle, that were intelligent. and really, richie was all those things. >> reporter: richie was in the air force. that's why they moved to minot, big airbase there. and it's where angila pursued her dream of becoming a nurse. >> she took classes whenever she could.