Betsy's logical mind and wonderful laugh, among other gifts, made it all happen (well, most of the time).
Betsy was an obnoxious, annoying and unintelligent person who was very hard to be around. 
mnli hypothesis: Betsy was an obnoxious, annoying and unintelligent person who was very hard to be around.  premise: Betsy's logical mind and wonderful laugh, among other gifts, made it all happen (well, most of the time).