What Goes Around Comes Around

18 year old Annabelle recounts the story of the day she killed her father. Family life is not perfect, she knows this to be true. One day her father yells and tips the scale of Annabelle's patience. She decides a quick and easy murder is appropriate to resolve the issue. How could someone do a thing like this and not be caught? It requires a gun, gloves, and the intelligence to execute a plan.