Is there a way to make Trudy and Patrick non hostile after accidental friendly fire?

I agreed to help Trudy at the Drumlin diner with killing some raiders. In the process, I accidentally shot Patrick while we were fighting the raiders. Both characters are now hostile. I tried to leave that place for a while and continue with another story line, but even after many days they still remember my mistake.

Is there some kind of cheat to fix this?

Solution 1:

You need to wait far enough to trigger a cell reset.

This takes, at most, 20 in-game days, and you CANNOT visit anywhere near that area at all (no checking every day; it resets the timer).

The most reliable way to trigger this is to sleep for 20 days at a far away settlement.

Source