It's hard Judy when you aren't used to it like I am, week after week. Just remember in the end the rat was given a good existance and it fulfilled it's natural role as did your snake. You were in the end only a small part of that dynamic between predator and prey. It's still hard to deal with if you get attached to the rat in question. That's why I continue to enjoy spoiling our breeder rats and give them names...that way I don't get overly attached to their offspring.