Krausfadr, regarding your idea:
So basically, Snoke/Palpatine senses her future as a potential threat, and ordered to have her killed. Kylo went to complete this task, found the parents and they gave her up immediately. Kylo, I’m assuming, sympathized with her abandonment, so he killed her parents and left her on Jakku. Is that correct?
Yes and Kylo also felt a connection with her beyond just her abandonment. Or the order could also have been to bring Rey before Snoke/Palpatine as she was a possible better apprentice than Kylo.