Basically is there a way to fix hostile companions so they won't attack you? I've progressed to far to load up an old save.

Story of what happen: I been working on the Silver Shroud quest and I've kept Piper with me and i've romanced her and everything so i've maxed out our bond but anyways I did the optional kill Shelly Tiller and Piper "hated" that then Hancock gave me 2 other targets, upon killing the 2nd target there were bodyguards, raiders and caravan guards in the area and I think I accidentally killed a caravan guard because it said Piper "hated" that then it gave me the option to send her to a settlement and she's been shooting me ever since, I sent her to Sanctuary and she shoots me whenever I visit.