Post-murder nightmares?

Your obsessiveness over this incident requires formal treatment. Of course, the thing to do is to find another snail and treat it as yourself and a brother and raise it as a member of your family, take it to concerts, bring it to restaurants, learn all you can on how to improve the lfe of a snail. This form of repentance was recommended by Mahatma Gandhi to a Hindi man in repentance for killing a Moslem man, onlt he had to raise a Moslem boy. Go and do something similar.