I have been exploring a new area recently that I don't think it has been brought up much before, at least not in great depth. I know it's sort of out there but....
So we know from this article that BB was into HS sports.
http://norfolkdailynews.com/news/io...cle_5ed1e356-dde2-11e7-80d9-4f2c52593ca8.html
A deeper look into this shows BB played volleyball, basketball, and ran track. She also has some pretty good stats and was even once invited to the NAIA in her senior year in March of 2012. Maxpreps and a few other sites has all of BB's stats from 2009-2012.
https://www.athletic.net/TrackAndField/Athlete.aspx?AID=886937#!/L0
http://www.kjasr.com/index.php?opti...ing-boswell-to-aib&catid=61:verbals&Itemid=95
http://www.maxpreps.com/search/default.aspx?type=athlete&search=bailey boswell&state=ia&gendersport=
SL graduated in 2011 and also played basketball, volleyball, and golf. SL's sister ML graduated in 2013 and also played basketball and volleyball. ML in particular has received awards (2010-2012) for volleyball. Maxpreps records only goes back to 2013/2014 for Neligh Oakdale but goes back much farther for Central Decatur.
http://www.omaha.com/photo-of-sydne...age_089dd998-d9e8-11e7-a16a-cba8c7ab98c5.html
https://nsaa-static.s3.amazonaws.com/awards/1011fall.pdf
While Cental-Decatur Hs and Neliegh-Oakdale Hs are not rival teams per say, they certainly would have played each other. This is very common in the NE, IA, SD tri-state area. I do live in it and am pretty familiar with the sports. My son plays football and basketball and we travel all over these three states. Most of the initial games make the roster but not all of them, specifically the more important games like play offs, invitationals, conferences, etc. We play until we lose and this can take all day sometimes multiple days playing multiple teams.
I guess where I am going with this is... is it possible that a sports related event has something to do with SL being selected as a victim? I think it's safe to say BB must have a competitive nature given all her athletic history; she's got a high ability and is multi-talented. It seems she had a future in it as well. Also, If I recall correctly, SL went missing either the day of or on her sister's birhday. I guess this is why it's stuck in my mind as a possiblilty. Perhaps also this is part of the reason why BB went to such great lengths to not be recognized? Though it's likely if she is the one with some type of grudge, the person at the other end of that grudge wouldn't even know.
I intend on looking a little more into this and see if I can find any old articles of games. I actually found several quite easily for BB and Central Decatur but things get sketchy when looking for Neligh Oakdale and SL. There are so many articles related to SL's death that it's a lot to wade through to get to any archives that are sports related. I even tried going through the high school's site itself which has an athletic archive section and I wonder if some info has been scrubbed all together.