Or someone on the other team did!
Old military maxim:
No battle plan survives first contact with the enemy...
Had not made the connection for the lesbian murders and the location of this couple or the timing. My spidey senses are leaning toward a triple homicide over the lesbians ‘bringing Gabby under their wings’ and the BF becoming insane over it. Would explain why he drove the van back to his parents house instead of abandoning it somewhere close to his parents home. This one is a sad case and murder(s) are becoming the more likely scenario. The lesbians were shot to death. The circumstances of their murders could be informative.