Rowena hadn't seen her son Fergus, or Crowley as he now went by, in over a century. Or two. So it was no wonder she had no clue she was a grandmother.

It was to all her surprise when she was in Crowley’s main room in his ‘house’ in hell, and you walked in, saying “Hello, Father.” To her son.

Rowena had only just reunited with Crowley, so they hadn't had much time to catch up.