Alfred knew of his sister's coming, so when he heard the voice, he wasn't surprised.
Looking around, he didn't find Logan, but Castiel was around. He shook his head when he realized Logan had gone out again without his knowledge.
'I really need to talk to this kid.' He thought internally.
He spoke nothing of it and acted like he was aware of Logan's movements. His sister's husband didn't like him, so he didn't want to give him a reason to mock him.
Castiel left later on since there were enough people in the house to look after Stephanie.
The next day.
Logan returned during the afternoon, and seeing the vehicle parked outside, he knew his Aunt was around. He didn't see his father's car so he guessed he must've left for work already.
When he walked inside, he was welcomed by the sight of Stephanie playing with her cousins.
"Logan!" Stephanie yelled in excitement and ran into his arms.