If the Dutiful Miser manipulation was intentional, it wouldn't work, but he's too damn dutiful to actually use it to his advantage. So all his friends do it for him.

Recent thought: some idiot (Rankin) might send word out that they have a feral, if there's quite a bit of indignation about immediately putting out a harness. Temeraire barely wears his, but a few of the less-tactful folk might want to put all of the history behind them in favor of getting a fire-breather.

I think Lord Allendale really notices when the girl toddles straight into his office (evading two nursemaids and a governess) and finds Laurence's favorite place and/or does something adorably similar. By the time they find the child, she is listening rather intently to Lord Allendale explaining the work she is interrupting.