Inside of the manor, you opened up a large door from the second floor to lean over the balcony and your eyes deceived a Thief trying to lockpick a safe against the wall at the right staircase

“C-Come on K-Kreacher! You can do t-this! She’s gonna l-love the gift I’ll give her!”

Thief suddenly stops lockpicking to notice your presence on the second floor

“Ah! G-Good Evening! H-How l-long have you been s-standing there?!”