If Mama Tran were in charge of finding Gadreel and avenging her son’s death that whole arc could be wrapped up in about 20 minutes. She’d find him, gank him, and spend the rest of the episode drinking Dean under the table while filling out law school applications for Sam.
“Kevin, I’m sorry. You did not choose this life. You busted your ass, you lost everything, everyone you love. And your reward? Getting killed. On my watch. If I– that was on me. It was my fault and there’s nothing I can do to make that right, and I’m sorry.”