today in skyrim i was at the blacksmith in riverwood and one of the kids there said to my nord "i hate your forever and ever and ever!!" so i saved my game and "fus ro dah" her!! but she didn't move at all.
but later i helped a stormclock prisoner escape from imperial soldiers (me and my companion killed three of them and got no bounty)

You obviously killed her mother.

not that i remember??
i did kill the blacksmith though!!

Then that's why.

All children will hate you if you kill their parents.

That's pretty much expected.

true

I don't understand why you would do such a thing though.